-3 -3х -2х = 9; -5х = 9 + 3; -5х = 12; 5х = -12; х = - 2,4
24 - 6х +3х = 3; - 3х = - 24 +3; - 3х = -21; 3х = 21; х = 7
- 72 + 9х - 4х = -2; 5х = 72 - 2; 5х = 70; х = 14
5 - 45х - 5х = - 1; - 50х = -1 - 5; 50х = 6; х = 6/50; х = 0,12
-6 +6х +4х = - 4; 10х = 6 - 4; 10х = 2; х = 0,2
- 24 - 8х + х = 4; - 7х = 24 + 4; - 7х = 28; 7х = - 28; х = - 4