(x-8)+4分之3x=42怎么做
问题描述：
(x-8)+4分之3x=42怎么做
答
(x-8)+4分之3x=42
(x-8)+0.75x=42
x-8+0.75x=42
x+0.75x=42+8
1.75x=50
x=50÷1.75
x=200/7
x=28又7分之4
答
(x-8)+4分之3x=42
x-8+(3/4)x=42
(7/4)x=42+8
(7/4)x=50
x=50×(4/7)
x=200/7