Question

(2х+3) - (5х + 11) = 7+(13-2х)
(7-10х) - (8-8х) + (10х+6) = -8
(2x+3)+(3x+4)+(5x+5)=12-7x

Answer 1

2х+3-5х-11=7+13-2х
2х-5х+2х=20+11-3
-х=28
х=-28

7-10х-8+8х+10х+6=-8
8х=-8-7+8-6
8х=-13
х=-1,625

2х+3+3х+12+5х+5=12-17х
27х=-8
х=-8/27