解方程(5a-1)/8=7/4 (x-1)/4-1=(2x+1)/6

问题描述:

解方程(5a-1)/8=7/4 (x-1)/4-1=(2x+1)/6

(5a-1)/8=7/4
5a-1=14
5a=15
a=3
(x-1)/4-1=(2x+1)/6
3x-3-12=4x+2
4x-3x=-15-2
x=-17