www.5129.net > ★x+2.7=12.5 ★x.75=3.84 x÷4.2=1.5 29x+4.3...

★x+2.7=12.5 ★x.75=3.84 x÷4.2=1.5 29x+4.3...

(1)x+2.7=12.5, x+2.7-2.7=12.5-2.7,

2.7÷x=9 解:x=2.7÷9 x=0.3 检验:把x=0.3代入方程 左边=2.7÷0

解:1.5x=4.5 x=3

1、0.6+x=2.7 移项x=2.7-1.6=1.1 2、x35=95 移项x=35+95=13

X+m÷0.2=2.7 X+5m=2.7 X=2.7-5m

2.7x+4.3x=84解方程 解: 7x=84 x=84÷7 x=12

2.7x-(300-1.5x)=120 解:2.7x-300+1.5x=120 2.

2.7×2-1.5x=0 解:5.4-1.5x=0 1.5x=5.4 x=5.4÷1.5 x

37.8X2.8+6.32X28 =37.8X2.8+63.2X2.8 =(37.8+63.2)

网站地图

All rights reserved Powered by www.5129.net

copyright ©right 2010-2021。
www.5129.net内容来自网络,如有侵犯请联系客服。zhit325@qq.com