(3x+12)/4=2-(5x-7)/3求X

问题描述:

(3x+12)/4=2-(5x-7)/3
求X

(3x+12)/4=2-(5x-7)/3
同时乘以12
3(3x+12)=24-4(5x-7)
9x+36=24-20x+28
9x+20x=24+28-36
29x=16
x=16/29

两边乘12
3(3x+12)=24-4(5x-7)
9x+36=24-20x+28
20x+9x=24+28-36
29x=16
x=16÷29
x=16/29