Question

1181. Решите уравнения: 1) 5x - 2 - 6 = 4 + 3x - 2); 2) 3x + 1 + 4 = 5x + 1 - 6; 3) 7 + 4x - 1) = 9x - 1 - 8; 4) 5x + 4- 6 = 3x + 4 + 8. 1180. 9 остановок. 1181. 1) -3; 7; 2) -6; 4; 3) -2; 4, 4) -11;​

Answer 1

Пошаговое объяснение:

5х - 2 - 6 = 4 + 3х - 2

5х - 8 = 3х + 2

5х - 3х = 2 + 8

2х = 10

х = 10 : 2

х = 5

3х + 1 + 4 = 5х + 1 - 6

3х + 5 = 5х - 5

3х - 5х = -5 - 5

-2х = -10

х = -10 : (-2)

х = 5

7 + 4х - 1 = 9х - 1 - 8

4х + 6 = 9х - 9

4х - 9х = -9 - 6

-5х = -15

х = -15 : (-5)

х = 3

5х + 4 - 6 = 3х + 4 + 8

5х - 2 = 3х + 12

5х - 3х = 12 + 2

2х = 14

х = 14 : 2

х = 7