Question

Помогите решить : 1)-6x=18 2)7x +119=0 3) 6x-8=3x+22 4)5x- (7x+7) =9​

Answer 1

Ответ:

1) х=18:6

х=3.

2)х=119:7

х=17

3)6х-3х=22+8

3х=30

х=30:3

х=10

4)5х-7х-7=9

5х-7х=9+7

-2х=16

х=16:(-2)

х=-8

Answer 2

Здравствуйте!

Ответ:

-3; -17; 10; -8.

Объяснение:

$- 6x = 18 \\ x = 18 \div ( - 6) \\ x = - 3$

$7x + 119 = 0 \\ 7x = - 199 \\ x = - 119 \div 7 \\ x = - 17$

$6x - 8 = 3x + 22 \\ 6x - 3x = 22 + 8 \\ 3x = 30 \\ x = 30 \div 3 \\ x = 10$

$5x - (7x + 7) = 9 \\ 5x - 7x - 7 = 9 \\ - 2x = 9 + 7 \\ - 2x = 16 \\ x = 16 \div ( - 2) \\ x = - 8$