Question

3(X+1)-1/3(X-1)=2(X+1)-1/2(X-1) （简便运算）

Answer 1

3(X+1)-1/3(X-1)=2(X+1)-1/2(X-1)
移项，得
(3-2)(x+1)=(1/3-1/2)(x-1)
x+1=-1/6(x-1)
同乘以6得
6x+6=1-x
7x=-5
x=-5/7

追问

你先乘以6看看
我给你分

追答

3(X+1)-1/3(X-1)=2(X+1)-1/2(X-1)
18(x+1)-2(x-1)=12(x+1)-3(x-1)
6(x+1)=-(x-1)
6x+6=1-x
7x=-5
x=-5/7

Answer 2

3(X+1)-1/3(X-1)=2(X+1)-1/2(X-1)
3(x+1)-1/3(x-1)-2(x+1)+1/2(x-1)=0
x+1+1/6(x-1)=0
6x+6+x-1=0
7x=-5
x=-5/7