2-1⼀2括号x-1括号完等于5分之1括号x+2括号完

2-1/2括号x-1括号完等于5分之1括号x+2括号完
2025-04-03 11:05:25
推荐回答(2个)
回答1:


如图

回答2:

解:依题意得
2-1/2(x-1)=1/5(x+2)
20-5(x-1)=2(x+2)
20-5x+5=2x+4
7x=21
x=3