3x-1=x+7/2 10x/7-17-20x/3=1 x-1/3=x/2-3

题目

3x-1=x+7/2 10x/7-17-20x/3=1 x-1/3=x/2-3
(3x-1)/5=(x+7)/2
10x/7-(17-20x)/3=1
(x-1)/3=x/(2-3)

答案

(3x-1)/5=(x+7)/2
6x-2=5x+35
6x-5x=35+2
x=37
10x/7-(17-20x)/3=1
30x-119+140x=21
170x=140
x=14/17
(x-1)/3=x/(2-3)
x-1=-3x
x+3x=1
4x=1
x=1/4