小学五年级解方程:8X-16=0、2.4X+1.2×2=7.2、12.5x-6x=19.5 五年级7.7-3×=12.2怎么解方程
\u89e3\u65b9\u7a0b\uff0c\u5e26\u203b\u7684\u68c0\u9a8c\uff1a7.2\u00d72\u51cf6x=3.967.2\u00d72\u51cf6x=3.96
14.4-6x=3.96
14.4-3.96=10.44=6x
x=1.74
-1.5
1. 8x-16=0解: 8x=16
x=16/8
x=2
2. 2.4x+1.2*2=7.2
解: 2.4x+2.4=7.2
2.4x=7.2-2.4
2.4X=4.8
x=4.8/2.4
x=2
3. 12.5x-6x=19.5
解: 6.5x=19.5
x=19.5/6.5
x=3
(*是乘号,/是除号)
希望能帮到你 求采纳 谢谢
8X-16=0
8X=16
X=16/8
X=2
2.4X+1.2×2=7.2
2.4X+2.4=7.2
2.4X=7.2-2.4
2.4X=4.8
X=4.8/2.4
X=2
12.5x-6x=19.5
6.5x=19.5
x=19.5/6.5
x=3
不懂可追问,有帮助请采纳,谢谢!
(1)8x-16=0 (2)2.4x+1.2*2=7.2 ("*"是乘号) (3)12.5x-6x=19.5
8x=16 2.4x+2.4=7.2 (12.5-6)x=19.5
x=2 2.4x=4.8 6.5x=19.5
x=2 x=3
小学五年级方程不是这么表达的吧,一元一次方程早就学了。
我来第一个:
解:8X=0+16
8X=16
X=2
绛旓細瑙f柟绋嬶細8X-16=40 8X-16=40 8X=40+16 X=56/8 鈭碭=7鏄師鏂圭▼鐨勮В銆
绛旓細瑙f柟绋:8x-16=32 绉婚」锛屽緱:8x=32+16 鍚堝苟鍚岀被椤癸紝寰:8x=48 绯绘暟鍖栦负1锛屽緱:x=6
绛旓細8x-16=48-8x 瑙o細8x+8x=48+16 16x=64 x=4
绛旓細(1)8x=16 x=2 (2)2.4x=7.2-1.2.2 2.4x=4.8 x=2 (3)6.5x=19.5 x=3
绛旓細8x-16锛40 8x锛40+16 8x锛56 x锛56/8 x锛7
绛旓細瑙锛8x-16=5x+33 8x-5x=33+16 5x=49 x=9.8 锛鏂圭▼涓殑鏌愪簺椤规敼鍙樼鍙峰悗锛屽彲浠ヤ粠鏂圭▼鐨勪竴杈圭Щ鍒板彟涓杈癸紝杩欐牱鐨勫彉褰㈠彨鍋氱Щ椤癸紝瑙h繖涓柟绋嬬敤鐨勬槸绉婚」锛
绛旓細锛1锛8x-16=0 8x =16 x=2 锛2锛2.4x+1.2脳2=7.2 2.4x+2.4=7.2 2.4x=4.8 x=2 锛3锛12.5x-6x=19.5 6.5x = 19.5 x = 3
绛旓細瑙锛 8x=16 x=16/8 x=2 2. 2.4x+1.2*2=7.2 瑙锛 2.4x+2.4=7.2 2.4x=7.2-2.4 2.4X=4.8 x=4.8/2.4 x=2 3. 12.5x-6x=19.5 瑙o細 6.5x=19.5 x=19.5/6.5 x=3 锛*鏄箻鍙凤紝/鏄櫎鍙凤級甯屾湜鑳藉府鍒颁綘 姹傞噰绾 璋㈣阿 ...
绛旓細8x涓16=5x鍗33 绉婚」 8x-5x=33+16 3x=49 x=49/3
绛旓細瑙f柟绋嬶細瑙o細2锛坸-16锛=8 x-16=8梅2 x-16=4 x=4+16 x=20 鏂圭▼妫楠屼负锛2x锛20-16锛=2x4=8