(1)4x-8-3x+1=3x-9

问题描述:

(1)4x-8-3x+1=3x-9
(2)4分之3y+3=8y-3-2y
要把过程写出来.

4x-8-3x+1=3x-9
3x-4x+3x=-8+1+9
2x=2
x=1
4分之3y+3=8y-3-2y 两边同时乘以4得
3y+12=32y-12-8y
32y-8y-3y=12+12
21y=24
7y=8
y=8/7