100道数学题计算（二元一次方程组的） 继续100道简单的二元一次方程组题目（纯计算的）答案要准确~
\u521d\u4e00\u4e8c\u5143\u4e00\u6b21\u65b9\u7a0b\u7ec4\u8ba1\u7b97\u9898100\u9053\uff08\u6709\u7b54\u6848\uff09(1) 66x+17y=3967
25x+y=1200
\u7b54\u6848\uff1ax=48 y=47
(2) 18x+23y=2303
74x-y=1998
\u7b54\u6848\uff1ax=27 y=79
(3) 44x+90y=7796
44x+y=3476
\u7b54\u6848\uff1ax=79 y=48
(4) 76x-66y=4082
30x-y=2940
\u7b54\u6848\uff1ax=98 y=51
(5) 67x+54y=8546
71x-y=5680
\u7b54\u6848\uff1ax=80 y=59
(6) 42x-95y=-1410
21x-y=1575
\u7b54\u6848\uff1ax=75 y=48
(7) 47x-40y=853
34x-y=2006
\u7b54\u6848\uff1ax=59 y=48
(8) 19x-32y=-1786
75x+y=4950
\u7b54\u6848\uff1ax=66 y=95
(9) 97x+24y=7202
58x-y=2900
\u7b54\u6848\uff1ax=50 y=98
(10) 42x+85y=6362
63x-y=1638
\u7b54\u6848\uff1ax=26 y=62
(11) 85x-92y=-2518
27x-y=486
\u7b54\u6848\uff1ax=18 y=44
(12) 79x+40y=2419
56x-y=1176
\u7b54\u6848\uff1ax=21 y=19
(13) 80x-87y=2156
22x-y=880
\u7b54\u6848\uff1ax=40 y=12
(14) 32x+62y=5134
57x+y=2850
\u7b54\u6848\uff1ax=50 y=57
(15) 83x-49y=82
59x+y=2183
\u7b54\u6848\uff1ax=37 y=61
(16) 91x+70y=5845
95x-y=4275
\u7b54\u6848\uff1ax=45 y=25
(17) 29x+44y=5281
88x-y=3608
\u7b54\u6848\uff1ax=41 y=93
(18) 25x-95y=-4355
40x-y=2000
\u7b54\u6848\uff1ax=50 y=59
(19) 54x+68y=3284
78x+y=1404
\u7b54\u6848\uff1ax=18 y=34
(20) 70x+13y=3520
52x+y=2132
\u7b54\u6848\uff1ax=41 y=50
(21) 48x-54y=-3186
24x+y=1080
\u7b54\u6848\uff1ax=45 y=99
(22) 36x+77y=7619
47x-y=799
\u7b54\u6848\uff1ax=17 y=91
(23) 13x-42y=-2717
31x-y=1333
\u7b54\u6848\uff1ax=43 y=78
(24) 28x+28y=3332
52x-y=4628
\u7b54\u6848\uff1ax=89 y=30
(25) 62x-98y=-2564
46x-y=2024
\u7b54\u6848\uff1ax=44 y=54
(26) 79x-76y=-4388
26x-y=832
\u7b54\u6848\uff1ax=32 y=91
(27) 63x-40y=-821
42x-y=546
\u7b54\u6848\uff1ax=13 y=41
(28) 69x-96y=-1209
42x+y=3822
\u7b54\u6848\uff1ax=91 y=78
(29) 85x+67y=7338
11x+y=308
\u7b54\u6848\uff1ax=28 y=74
(30) 78x+74y=12928
14x+y=1218
\u7b54\u6848\uff1ax=87 y=83
(31) 39x+42y=5331
59x-y=5841
\u7b54\u6848\uff1ax=99 y=35
(32) 29x+18y=1916
58x+y=2320
\u7b54\u6848\uff1ax=40 y=42
(33) 40x+31y=6043
45x-y=3555
\u7b54\u6848\uff1ax=79 y=93
(34) 47x+50y=8598
45x+y=3780
\u7b54\u6848\uff1ax=84 y=93
(35) 45x-30y=-1455
29x-y=725
\u7b54\u6848\uff1ax=25 y=86
(36) 11x-43y=-1361
47x+y=799
\u7b54\u6848\uff1ax=17 y=36
(37) 33x+59y=3254
94x+y=1034
\u7b54\u6848\uff1ax=11 y=49
(38) 89x-74y=-2735
68x+y=1020
\u7b54\u6848\uff1ax=15 y=55
(39) 94x+71y=7517
78x+y=3822
\u7b54\u6848\uff1ax=49 y=41
(40) 28x-62y=-4934
46x+y=552
\u7b54\u6848\uff1ax=12 y=85
(41) 75x+43y=8472
17x-y=1394
\u7b54\u6848\uff1ax=82 y=54
(42) 41x-38y=-1180
29x+y=1450
\u7b54\u6848\uff1ax=50 y=85
(43) 22x-59y=824
63x+y=4725
\u7b54\u6848\uff1ax=75 y=14
(44) 95x-56y=-401
90x+y=1530
\u7b54\u6848\uff1ax=17 y=36
(45) 93x-52y=-852
29x+y=464
\u7b54\u6848\uff1ax=16 y=45
(46) 93x+12y=8823
54x+y=4914
\u7b54\u6848\uff1ax=91 y=30
(47) 21x-63y=84
20x+y=1880
\u7b54\u6848\uff1ax=94 y=30
(48) 48x+93y=9756
38x-y=950
\u7b54\u6848\uff1ax=25 y=92
(49) 99x-67y=4011
75x-y=5475
\u7b54\u6848\uff1ax=73 y=48
(50) 83x+64y=9291
90x-y=3690
\u7b54\u6848\uff1ax=41 y=92
(51) 17x+62y=3216
75x-y=7350
\u7b54\u6848\uff1ax=98 y=25
(52) 77x+67y=2739
14x-y=364
\u7b54\u6848\uff1ax=26 y=11
(53) 20x-68y=-4596
14x-y=924
\u7b54\u6848\uff1ax=66 y=87
(54) 23x+87y=4110
83x-y=5727
\u7b54\u6848\uff1ax=69 y=29
(55) 22x-38y=804
86x+y=6708
\u7b54\u6848\uff1ax=78 y=24
(56) 20x-45y=-3520
56x+y=728
\u7b54\u6848\uff1ax=13 y=84
(57) 46x+37y=7085
61x-y=4636
\u7b54\u6848\uff1ax=76 y=97
(58) 17x+61y=4088
71x+y=5609
\u7b54\u6848\uff1ax=79 y=45
(59) 51x-61y=-1907
89x-y=2314
\u7b54\u6848\uff1ax=26 y=53
(60) 69x-98y=-2404
21x+y=1386
\u7b54\u6848\uff1ax=66 y=71
(61) 15x-41y=754
74x-y=6956
\u7b54\u6848\uff1ax=94 y=16
(62) 78x-55y=656
89x+y=5518
\u7b54\u6848\uff1ax=62 y=76
(63) 29x+21y=1633
31x-y=713
\u7b54\u6848\uff1ax=23 y=46
(64) 58x-28y=2724
35x+y=3080
\u7b54\u6848\uff1ax=88 y=85
(65) 28x-63y=-2254
88x-y=2024
\u7b54\u6848\uff1ax=23 y=46
(66) 43x+50y=7064
85x+y=8330
\u7b54\u6848\uff1ax=98 y=57
(67) 58x-77y=1170
38x-y=2280
\u7b54\u6848\uff1ax=60 y=30
(68) 92x+83y=11586
43x+y=3010
\u7b54\u6848\uff1ax=70 y=62
(69) 99x+82y=6055
52x-y=1716
\u7b54\u6848\uff1ax=33 y=34
(70) 15x+26y=1729
94x+y=8554
\u7b54\u6848\uff1ax=91 y=14
(71) 64x+32y=3552
56x-y=2296
\u7b54\u6848\uff1ax=41 y=29
(72) 94x+66y=10524
84x-y=7812
\u7b54\u6848\uff1ax=93 y=27
(73) 65x-79y=-5815
89x+y=2314
\u7b54\u6848\uff1ax=26 y=95
(74) 96x+54y=6216
63x-y=1953
\u7b54\u6848\uff1ax=31 y=60
(75) 60x-44y=-352
33x-y=1452
\u7b54\u6848\uff1ax=44 y=68
(76) 79x-45y=510
14x-y=840
\u7b54\u6848\uff1ax=60 y=94
(77) 29x-35y=-218
59x-y=4897
\u7b54\u6848\uff1ax=83 y=75
(78) 33x-24y=1905
30x+y=2670
\u7b54\u6848\uff1ax=89 y=43
(79) 61x+94y=11800
93x+y=5952
\u7b54\u6848\uff1ax=64 y=84
(80) 61x+90y=5001
48x+y=2448
\u7b54\u6848\uff1ax=51 y=21
(81) 93x-19y=2
86x-y=1548
\u7b54\u6848\uff1ax=18 y=88
(82) 19x-96y=-5910
30x-y=2340
\u7b54\u6848\uff1ax=78 y=77
(83) 80x+74y=8088
96x-y=8640
\u7b54\u6848\uff1ax=90 y=12
(84) 53x-94y=1946
45x+y=2610
\u7b54\u6848\uff1ax=58 y=12
(85) 93x+12y=9117
28x-y=2492
\u7b54\u6848\uff1ax=89 y=70
(86) 66x-71y=-1673
99x-y=7821
\u7b54\u6848\uff1ax=79 y=97
(87) 43x-52y=-1742
76x+y=1976
\u7b54\u6848\uff1ax=26 y=55
(88) 70x+35y=8295
40x+y=2920
\u7b54\u6848\uff1ax=73 y=91
(89) 43x+82y=4757
11x+y=231
\u7b54\u6848\uff1ax=21 y=47
(90) 12x-19y=236
95x-y=7885
\u7b54\u6848\uff1ax=83 y=40
(91) 51x+99y=8031
71x-y=2911
\u7b54\u6848\uff1ax=41 y=60
(92) 37x+74y=4403
69x-y=6003
\u7b54\u6848\uff1ax=87 y=16
(93) 46x+34y=4820
71x-y=5183
\u7b54\u6848\uff1ax=73 y=43
(94) 47x+98y=5861
55x-y=4565
\u7b54\u6848\uff1ax=83 y=20
(95) 30x-17y=239
28x+y=1064
\u7b54\u6848\uff1ax=38 y=53
(96) 55x-12y=4112
79x-y=7268
\u7b54\u6848\uff1ax=92 y=79
(97) 27x-24y=-450
67x-y=3886
\u7b54\u6848\uff1ax=58 y=84
(98) 97x+23y=8119
14x+y=966
\u7b54\u6848\uff1ax=69 y=62
(99) 84x+53y=11275
70x+y=6790
\u7b54\u6848\uff1ax=97 y=59
(100) 51x-97y=297
19x-y=1520
\u7b54\u6848\uff1ax=80 y=38
79x+40y=2419
56x-y=1176
\u7b54\u6848\uff1ax=21 y=19
80x-87y=2156
22x-y=880
\u7b54\u6848\uff1ax=40 y=12
32x+62y=5134
57x+y=2850
\u7b54\u6848\uff1ax=50 y=57
83x-49y=82
59x+y=2183
\u7b54\u6848\uff1ax=37 y=61
91x+70y=5845
95x-y=4275
\u7b54\u6848\uff1ax=45 y=25
29x+44y=5281
88x-y=3608
\u7b54\u6848\uff1ax=41 y=93
25x-95y=-4355
40x-y=2000
\u7b54\u6848\uff1ax=50 y=59
54x+68y=3284
78x+y=1404
\u7b54\u6848\uff1ax=18 y=34
70x+13y=3520
52x+y=2132
\u7b54\u6848\uff1ax=41 y=50 48x-54y=-3186
24x+y=1080
\u7b54\u6848\uff1ax=45 y=99
36x+77y=7619
47x-y=799
\u7b54\u6848\uff1ax=17 y=91
13x-42y=-2717
31x-y=1333
\u7b54\u6848\uff1ax=43 y=78
28x+28y=3332
52x-y=4628
\u7b54\u6848\uff1ax=89 y=30
62x-98y=-2564
46x-y=2024
\u7b54\u6848\uff1ax=44 y=54
79x-76y=-4388
26x-y=832
\u7b54\u6848\uff1ax=32 y=91
63x-40y=-821
42x-y=546
\u7b54\u6848\uff1ax=13 y=41
69x-96y=-1209
42x+y=3822
\u7b54\u6848\uff1ax=91 y=78
85x+67y=7338
11x+y=308
\u7b54\u6848\uff1ax=28 y=74
78x+74y=12928
14x+y=1218
\u7b54\u6848\uff1ax=87 y=83
39x+42y=5331
59x-y=5841
\u7b54\u6848\uff1ax=99 y=35
29x+18y=1916
58x+y=2320
\u7b54\u6848\uff1ax=40 y=42 40x+31y=6043
45x-y=3555
\u7b54\u6848\uff1ax=79 y=93
47x+50y=8598
45x+y=3780
\u7b54\u6848\uff1ax=84 y=93
45x-30y=-1455
29x-y=725
\u7b54\u6848\uff1ax=25 y=86
11x-43y=-1361
47x+y=799
\u7b54\u6848\uff1ax=17 y=36
33x+59y=3254
94x+y=1034
\u7b54\u6848\uff1ax=11 y=49
89x-74y=-2735
68x+y=1020
\u7b54\u6848\uff1ax=15 y=55
94x+71y=7517
78x+y=3822
\u7b54\u6848\uff1ax=49 y=41
28x-62y=-4934
46x+y=552
\u7b54\u6848\uff1ax=12 y=85
75x+43y=8472
17x-y=1394
\u7b54\u6848\uff1ax=82 y=54
41x-38y=-1180
29x+y=1450
\u7b54\u6848\uff1ax=50 y=85
22x-59y=824
63x+y=4725
\u7b54\u6848\uff1ax=75 y=14
95x-56y=-401
90x+y=1530
\u7b54\u6848\uff1ax=17 y=36
93x-52y=-852
29x+y=464
\u7b54\u6848\uff1ax=16 y=45
93x+12y=8823
54x+y=4914
\u7b54\u6848\uff1ax=91 y=30
21x-63y=84
20x+y=1880
\u7b54\u6848\uff1ax=94 y=30
48x+93y=9756
38x-y=950
\u7b54\u6848\uff1ax=25 y=92
99x-67y=4011
75x-y=5475
\u7b54\u6848\uff1ax=73 y=48
83x+64y=9291
90x-y=3690
\u7b54\u6848\uff1ax=41 y=92
17x+62y=3216
75x-y=7350
\u7b54\u6848\uff1ax=98 y=25
77x+67y=2739
14x-y=364
\u7b54\u6848\uff1ax=26 y=11
20x-68y=-4596
14x-y=924
\u7b54\u6848\uff1ax=66 y=87
23x+87y=4110
83x-y=5727
\u7b54\u6848\uff1ax=69 y=29
22x-38y=804
86x+y=6708
\u7b54\u6848\uff1ax=78 y=24
20x-45y=-3520
56x+y=728
\u7b54\u6848\uff1ax=13 y=84
46x+37y=7085
61x-y=4636
\u7b54\u6848\uff1ax=76 y=97
17x+61y=4088
71x+y=5609
\u7b54\u6848\uff1ax=79 y=45
51x-61y=-1907
89x-y=2314
\u7b54\u6848\uff1ax=26 y=53
69x-98y=-2404
21x+y=1386
\u7b54\u6848\uff1ax=66 y=71
15x-41y=754
74x-y=6956
\u7b54\u6848\uff1ax=94 y=16
78x-55y=656
89x+y=5518
\u7b54\u6848\uff1ax=62 y=76
29x+21y=1633
31x-y=713
\u7b54\u6848\uff1ax=23 y=46
58x-28y=2724
35x+y=3080
\u7b54\u6848\uff1ax=88 y=85
28x-63y=-2254
88x-y=2024
\u7b54\u6848\uff1ax=23 y=46
43x+50y=7064
85x+y=8330
\u7b54\u6848\uff1ax=98 y=57
58x-77y=1170
38x-y=2280
\u7b54\u6848\uff1ax=60 y=30
92x+83y=11586
43x+y=3010
\u7b54\u6848\uff1ax=70 y=62
99x+82y=6055
52x-y=1716
\u7b54\u6848\uff1ax=33 y=34
15x+26y=1729
94x+y=8554
\u7b54\u6848\uff1ax=91 y=14
64x+32y=3552
56x-y=2296
\u7b54\u6848\uff1ax=41 y=29
94x+66y=10524
84x-y=7812
\u7b54\u6848\uff1ax=93 y=27
65x-79y=-5815
89x+y=2314
\u7b54\u6848\uff1ax=26 y=95
96x+54y=6216
63x-y=1953
\u7b54\u6848\uff1ax=31 y=60
60x-44y=-352
33x-y=1452
\u7b54\u6848\uff1ax=44 y=68
79x-45y=510
14x-y=840
\u7b54\u6848\uff1ax=60 y=94
29x-35y=-218
59x-y=4897
\u7b54\u6848\uff1ax=83 y=75
33x-24y=1905
30x+y=2670
\u7b54\u6848\uff1ax=89 y=43
61x+94y=11800
93x+y=5952
\u7b54\u6848\uff1ax=64 y=84
61x+90y=5001
48x+y=2448
\u7b54\u6848\uff1ax=51 y=21
93x-19y=2
86x-y=1548
\u7b54\u6848\uff1ax=18 y=88
19x-96y=-5910
30x-y=2340
\u7b54\u6848\uff1ax=78 y=77
80x+74y=8088
96x-y=8640
\u7b54\u6848\uff1ax=90 y=12
53x-94y=1946
45x+y=2610
\u7b54\u6848\uff1ax=58 y=12
93x+12y=9117
28x-y=2492
\u7b54\u6848\uff1ax=89 y=70
66x-71y=-1673
99x-y=7821
\u7b54\u6848\uff1ax=79 y=97
43x-52y=-1742
76x+y=1976
\u7b54\u6848\uff1ax=26 y=55
70x+35y=8295
40x+y=2920
\u7b54\u6848\uff1ax=73 y=91
43x+82y=4757
11x+y=231
\u7b54\u6848\uff1ax=21 y=47
12x-19y=236
95x-y=7885
\u7b54\u6848\uff1ax=83 y=40
51x+99y=8031
71x-y=2911
\u7b54\u6848\uff1ax=41 y=60
37x+74y=4403
69x-y=6003
\u7b54\u6848\uff1ax=87 y=16
46x+34y=4820
71x-y=5183
\u7b54\u6848\uff1ax=73 y=43
47x+98y=5861
55x-y=4565
\u7b54\u6848\uff1ax=83 y=20
30x-17y=239
28x+y=1064
\u7b54\u6848\uff1ax=38 y=53
55x-12y=4112
79x-y=7268
\u7b54\u6848\uff1ax=92 y=79
27x-24y=-450
67x-y=3886
\u7b54\u6848\uff1ax=58 y=84
97x+23y=8119
14x+y=966
\u7b54\u6848\uff1ax=69 y=62
84x+53y=11275
70x+y=6790
\u7b54\u6848\uff1ax=97 y=59
51x-97y=297
19x-y=1520
\u7b54\u6848\uff1ax=80 y=39
25x+y=1200
答案：x=48 y=47
(2) 18x+23y=2303
74x-y=1998
答案：x=27 y=79
(3) 44x+90y=7796
44x+y=3476
答案：x=79 y=48
(4) 76x-66y=4082
30x-y=2940
答案：x=98 y=51
(5) 67x+54y=8546
71x-y=5680
答案：x=80 y=59
1.2x+9y=81
3x+y=34
2.9x+4y=35
8x+3y=30
3.7x+2y=52
7x+4y=62
4.4x+6y=54
9x+2y=87
5.2x+y=7
2x+5y=19
6.x+2y=21
3x+5y=56
7.5x+7y=52
5x+2y=22
8.5x+5y=65
7x+7y=203
9.8x+4y=56
x+4y=21
10.5x+7y=41
5x+8y=44
11.7x+5y=54
3x+4y=38
12.x+8y=15
4x+y=29
13.3x+6y=24
9x+5y=46
14.9x+2y=62
4x+3y=36
15.9x+4y=46
7x+4y=42
16.9x+7y=135
4x+y=41
17.3x+8y=51
x+6y=27
18.9x+3y=99
4x+7y=95
19.9x+2y=38
3x+6y=18
20.5x+5y=45
7x+9y=69
21.8x+2y=28
7x+8y=62
22.x+6y=14
3x+3y=27
23.7x+4y=67
2x+8y=26
24.5x+4y=52
7x+6y=74
25.7x+y=9
4x+6y=16
26.6x+6y=48
6x+3y=42
27.8x+2y=16
7x+y=11
28.4x+9y=77
8x+6y=94
29.6x+8y=68
7x+6y=66
30.2x+2y=22
7x+2y=47
. 一次篮、排球比赛，共有48个队，520名运动员参加，其中篮球队每队10名，排球队每队12名，求篮、排球各有多少队参赛？
2. 某厂买进甲、乙两种材料共56吨，用去9860元。若甲种材料每吨190元，乙种材料每吨160元，则两种材料各买多少吨？
3. 某人用24000元买进甲、乙两种股票，在甲股票升值15％，乙股票下跌10％时卖出，共获利1350元，试问某人买的甲、乙两股票各是多少元？
2． 有甲乙两种债券年利率分别是10%与12%，现有400元债券，一年后获利45元，问两种债券各有多少？
3． 种饮料大小包装有3种，1个中瓶比2小瓶便宜2角，1个大瓶比1个中瓶加1个小瓶贵4角，大、中、小各买1瓶，需9元6角。3种包装的饮料每瓶各多少元？
4． 某班同学去18千米的北山郊游。只有一辆汽车，需分两组，甲组先乘车、乙组步行。车行至A处，甲组下车步行，汽车返回接乙组，最后两组同时达到北山站。已知汽车速度是60千米/时，步行速度是4千米/时，求A点距北山站的距离。
5． 一级学生去饭堂开会，如果每4人共坐一张长凳，则有28人没有位置坐，如果6人共坐一张长凳，求初一级学生人数及长凳数．
6． 两列火车同时从相距910千米的两地相向出发，10小时后相遇，如果第一列车比第二列车早出发4小时20分，那么在第二列火车出发8小时后相遇，求两列火车的速度．
7． 购买甲种图书10本和乙种图书16本共付款410元，甲种图书比乙种图书每本贵15元，问甲、乙两种图书每本各买多少元？
8． 甲、乙两人分别从甲、乙两地同时相向出发，在甲超过中点50米处甲、乙两人第一次相遇，甲、乙到达乙、甲两地后立即返身往回走，结果甲、乙两人在距甲地100米处第二次相遇，求甲、乙两地的路程。
9． 、某工程车从仓库装上水泥电线杆运送到离仓库恰为1000米处的公路边栽立，要求沿公路的一边向前每隔100米栽立电线杆。已知工程车每次至多只能运送电线杆4根，要求完成运送18根的任务，并返回仓库。若工程车行驶每千米耗油m升（耗油量只考虑与行驶的路程有关），每升汽油n元，求完成此项任务最低的耗油费用。
10． 某家庭前年结余5000元，去年结余9500元，已知去年的收入比前年增加了15%，而支出比前年减少了10%，这个家庭去年的收入和支出各是多少？
11 .某人装修房屋，原预算25000元。装修时因材料费下降了20％，工资涨了10％，实际用去21500元。求原来材料费及工资各是多少元？
12、某单位甲、乙两人，去年共分得现金9000元，今年共分得现金12700元 . 已知今年分得的现金，甲增加50％，乙增加30％ . 两人今年分得的现金各是多少元？
13..若干学生住宿,若每间住4人则余20人,若每间住8人,则有一间不空也不满,问宿舍几间,学生多少人?
14. .某运输公司有大小两种货车,2辆大车和3辆小车可运货15.5吨,5辆大车和6 辆小车可运货35吨,客户王某有货52吨,要求一次性用数量相等的大小货车运出,问需用大、小货车各多少辆?
15、通讯员要在规定时间内到达某地，他每小时走15千米，则可提前24分钟到达某地；如果每小时走12千米，则要迟到15分钟。求通讯员到达某地的路程是多少千米？和原定的时间为多少小时？
16.有一片牧场,草每天都在匀速生长(草每天增长量相等)如果放牧24头牛,则6天吃完牧草.如果放牧21头牛,则8天吃完,设每头牛每天吃草的量是相等的,问:
1、如果放牧16头牛，几天可以吃完牧草？
2、要使牧草永远不吃完，至少只能牧几头牛？
17.有150名工人分别生产螺钉和螺母，一个人一天生产螺钉500个，或生产螺母300个。一个螺钉配两个螺母，分别安排多少工人生产螺钉和螺母才能正好配套？
18.现有1角，5角1元三种硬币共14枚，总面值是5元7角其中1角的硬币比5角硬币多3枚.求三种硬币各有几枚.
19.一辆汽车从A地出发，向东行驶，途中要过一座桥，使用相同的时间，如果车速是每小时行驶60千米，就能越过桥2千米；如果车速是每小时行50千米，就差3千米才到桥.A地与桥相距多远？用了多少和时间？
20.一批货物要运往某地，货主准备租用汽车运输公司的甲、乙两种货车，已知过去两次租用这两种货车的情况如下：甲种货车第一次车辆数为2辆，第二次为5辆；乙种货车第一次辆数为3辆，第二次为6辆；累计运货吨数第一次为15.5吨，第二次为35吨
（1）甲乙两种货车每次各运货物多少吨？
（2）现租用该公司3辆甲种货车及5辆乙种货车一次刚好运完这批货物，如果按每吨付运费30元计算，货主应付运费多少元？
甲团队的人数少于50，设甲团队人数为x；乙团队人数不超过100，设乙团队的人数为y。因为乙团队的人数有等于100或小于100两种情况，则该题有以下两种情况，可以得出以下两个方程组：
第一种情况：13x+9y=1392,9x+9y=1080.
求解方程组得出：x=72,y=48。
第二种情况13x+11y=1392.9x+9y=1080。
求解方程组得出：x=36,y=84。
根据已知条件，甲团队人数少于50人，乙团队人数不超过100人，得出第二种情况是合理的，则该题的答案为：甲团队的人数为36人，乙团队的人数为84人。
绛旓細(1) 66x+17y=3967 25x+y=1200 绛旀锛歺=48 y=47 (2) 18x+23y=2303 74x-y=1998 绛旀锛歺=27 y=79 (3) 44x+90y=7796 44x+y=3476 绛旀锛歺=79 y=48 (4) 76x-66y=4082 30x-y=2940 绛旀锛歺=98 y=51 (5) 67x+54y=8546 71x-y=5680 绛旀锛歺=80 y=59 (6) 42x-95y...
绛旓細7x+2y=47 . 涓娆绡佹帓鐞冩瘮璧涳紝鍏辨湁48涓槦锛520鍚嶈繍鍔ㄥ憳鍙傚姞锛屽叾涓鐞冮槦姣忛槦10鍚嶏紝鎺掔悆闃熸瘡闃12鍚嶏紝姹傜銆佹帓鐞冨悇鏈夊灏戦槦鍙傝禌锛2. 鏌愬巶涔拌繘鐢层佷箼涓ょ鏉愭枡鍏56鍚紝鐢ㄥ幓9860鍏冦傝嫢鐢茬鏉愭枡姣忓惃190鍏冿紝涔欑鏉愭枡姣忓惃160鍏冿紝鍒欎袱绉嶆潗鏂欏悇涔板灏戝惃锛3. 鏌愪汉鐢24000鍏冧拱杩涚敳銆佷箼涓ょ鑲＄エ锛屽湪鐢...
绛旓細x+y=180 15x=12y 瑙ｈ繖涓柟绋嬶紝x=80 y=100 2.鐢30鍏冮挶涔颁袱绉嶉偖绁ㄥ叡40寮狅紝鍏朵腑涓绉嶉潰鍊1鍏冿紝涓绉嶉潰鍊0.5鍏冿紝鍒欎袱绉嶉偖绁ㄥ悇涔颁簡澶氬皯寮狅紵瑙ｈ锛1鍏冪殑閭エ涔皒寮狅紝0.5鍏冪殑閭エ涔皔寮犮倄+y=40 x+0.5y=30 瑙ｈ繖涓柟绋嬶紝 x=20 y=20 3.鐢叉暟鐨2鍊嶄笌涔欐暟鐨勪笁鍊嶇殑鍜屾槸25锛...
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绛旓細涓銆侀夋嫨棰1.(2012•寰峰窞)宸茬煡 ,鍒檃+b绛変簬( ) A. 3 B. C. 2 D. 1鑰冪偣: 瑙浜屽厓涓娆鏂圭▼缁勩備笓棰: 璁＄畻棰銆傚垎鏋: 鈶+鈶″緱鍑4a+4b=12,鏂圭▼鐨勪袱杈归兘闄や互4鍗冲彲寰楀嚭绛旀.瑙ｇ瓟: 瑙: ,鈭碘憼+鈶″緱:4a+4b=12,鈭碼+b=3.鏁呴堿.鐐硅瘎: 鏈鑰冩煡浜嗚В浜屽厓涓娆℃柟绋嬬粍鐨勫簲鐢,鍏抽敭鏄鏌ュ鐢熻兘鍚﹁繍鐢ㄥ阀濡...
绛旓細1. 涓娆绡佹帓鐞冩瘮璧涳紝鍏辨湁48涓槦锛520鍚嶈繍鍔ㄥ憳鍙傚姞锛屽叾涓鐞冮槦姣忛槦10鍚嶏紝鎺掔悆闃熸瘡闃12鍚嶏紝姹傜銆佹帓鐞冨悇鏈夊灏戦槦鍙傝禌锛2. 鏌愬巶涔拌繘鐢层佷箼涓ょ鏉愭枡鍏56鍚紝鐢ㄥ幓9860鍏冦傝嫢鐢茬鏉愭枡姣忓惃190鍏冿紝涔欑鏉愭枡姣忓惃160鍏冿紝鍒欎袱绉嶆潗鏂欏悇涔板灏戝惃锛3. 鏌愪汉鐢24000鍏冧拱杩涚敳銆佷箼涓ょ鑲＄エ锛屽湪鐢茶偂绁ㄥ崌鍊15...
绛旓細1. 鍋囪鏈変粨搴搙涓紝璐х墿y y=30x+30 y=40(x-1)2. 鍋囪鐢瞲,涔檡 2(x+y)=400 20(x-y)=400 3. 鍋囪鑸归焫,璺濈y y=2(x+5)y=(4.5-2)(x-5)4. 鍋囪璺濈x,鍘熻鍒掓椂闂磞 x=35(y+2)x=50(y-1)5. 鍋囪鍘绘椂x,杩斿洖y 450=(3-1.5)x 450=(3+1.5)y 姹倄+y=?6. 鍋囪...
绛旓細绗竴涓紡瀛愭槸閫熷害鍏崇郴y=3x鈶 绗簩涓槸鐩稿悜鑰岃锛屽畠浠蛋鐨勬昏矾绋嬫槸90km锛屾懇鎵樿溅璧颁簡11-9=2灏忔椂锛岃嚜琛岃溅璧颁簡11-8=3灏忔椂锛3x+2y=90鈶 鈶犱唬鍏モ憽3x+6x=90锛9x=90锛寈=10鍐嶄唬鍏モ憼y=3x=30.鎵浠ユ懇鎵樿溅30鍗冪背姣忓皬鏃讹紝鑷杞10鍗冪背姣忓皬鏃躲傝繖閬撻鑰冪殑鏄熀鏈煡璇嗭紝鎬濊矾瑕佹竻妤氥
