1)4x+5(3-2)=5-11x 3)8x+3(7-2x)=4x+3

1) х = 0; 3) х = 9.

Пошаговое объяснение:

1) 4х+5(3-2) = 5-11х

4х+15-10 = 5-11х

4х+11х = -15+10+5

15х = 0

х = 0;

3) 8x+3(7-2x) = 4x+3

8х+21-6х = 4х+3

8х-6х-4х = -21+3

-2х = -18

делим обе части уравнения на (-2)

х = 9.

1) 4х + 15 - 10х = 5х - 11х
15 - 6х = 5 - 11х
15 - 5 = -11х + 6х
10 = -5х
х = -2

2) 8х + 21 - 6х= 4х + 3
21 - 2х = 4х + 3
21 - 3 = 4х + 2х
18 = 6х
х = 6 : 18
х = 0,5