6脳(x-0.4)=18怎样解
0.4(30+x)=x-18 \u600e\u4e48\u89e3\uff1f0.4(30+x)=x-18
12+0.4x=x-18
0.4x-x=-18-12
-0.6x=-30
x=-30/-0.6
x=50
x-0.4=18/6
x=3+0.4
x=3.4
_=2X
绛旓細x-(0.4x+8锛-0.5(0.4x+8)=6 瑙o細x-0.4x-8-0.5*0.4x-0.5*8=6 x-0.4x-8-0.2x-4=6 0.4x-12=6 0.4x=18 x=18/0.4 x= 45
绛旓細锛坸-0.4)/(x+0.25)=12/18 锛坸-0.4)/(x+0.25)=2/3 3*锛坸-0.4)=2*(x+0.25)3x-1.2=2x+0.5 3x-2x=1.2+0.5 x=1.7
绛旓細6锛*2 锛-0.4*6=9.6
绛旓細X-18=40%*(X+30)X-18=0.4X+12 X-0.4X=12+18 0.6X=30 X=50
绛旓細4*(6-x)=1.6 涓よ竟闄や互4,寰 6-x=0.4 鎵浠 x=6-0.4=5.6
绛旓細1.2x=81.6 x+5.6=9.4 52锛峹 锛15 91梅x 锛1.3 X+8.3=10.7 15x 锛3 3x锛8锛16 7(x-2)=2x+3 3x+9=2718(x-2)=270 12x=300-4x 7x+5.3=7.4 3x梅5=4.8 30梅x+25=85 1.4脳8-2x=6 6x-12.8脳3=0.06 410-3x=170 3(x+0.5)=21 0.5x+8=43 6x-3x=1...
绛旓細x=1.25锛涳紙4锛墄-15%x=68 85%x=68 85%x梅85%=68梅85% x=80锛涳紙5锛3锛坸-1锛=9 3锛坸-1锛壝3=9梅3 x-1+1=3+1 x=4锛涳紙6锛0.5x+6=18 0.5x+6-6=18-6 0.5x梅0.5=12梅0.5 x=24锛
绛旓細75.6梅x=12.6 5x+12.5=32.3 5(x+8)=102 x+3x+10=70 3(x+3)=50-x+3 5x+15=60 3.5-5x=2 0.3脳7+4x=12.5 x梅1.5-1.25=0.75 4x-1.3脳6=2.6 20-9x=1.2脳6.25 6x+12.8=15.8 150脳2+3x=690 2x-20=4 3x+6=18 2(2.8+x)=10.4 (x-3)梅2=7.5 ...
绛旓細鍟
绛旓細鍥炵瓟锛(1)0.86脳 (2)1.2脳-1.2 (3)8脳+9