2х + 1 = 4х - 5
8 - 3х = 6х - 1
12х - 5= 9х + 7
- 40 + 8х = - х + 5
27 - 5х = 15 + х
- 7х + 5 = 17 + 5х
9х + 2= 15х + 2
18х + 78 = 16х + 178
10х + 35 = 10х + 45
-11х - 63 = 18х + 217