Question

(7-5х)-(8-4х)+(5х+6)=8 

  (3-2х)+(4-3х)+(5-5х)=12+7х

Answer 1

(7-5х)-(8-4х)+(5х+6)=8
7-5х-8+4х+5х+6=8

4х=3

х=3/4

Ответ:3/4
(3-2х)+(4-3х)+(5-5х)=12+7х

3-2х+4-3х+5-5х=12+7х

 17х=0

х=0 

Ответ: 0