Решите

Ответ:

Пошаговое объяснение:

Решите уравнения

10-2(-х-7)=9

10 + 2x + 14 = 9

24 + 2x = 9

2x = 9 - 24

2x = -15

x = -15 : 2

x = -7,5

8-4(-7х+8)=4

8 + 28x - 32 = 4

28x - 24 = 4

28x = 4 + 24

28x = 28

x = 1

1-6(2х-3)=-2

1 - 12x + 18 = -2

19 - 12x = -2

12x = 19 + 2

12x = 21

x = 21 : 12

x = 1,75

10+9(-10-9х)=8-х

10 - 90 - 81x = 8 - x

-80 - 81x = 8 - x

81x - x = -80 - 8

80x = - 88

x = -88 : 80

x = -1,1

-1+8(7-6х)=2х+6

-1 + 56 - 48x = 2x + 6

55 - 48x = 2x + 6

2x+ 48x = 55 - 6

50x = 49

x = 49 : 50

x = 0,98

-2+3(1+2х)=-2х+3

-2 + 3 + 6x = -2x + 3

1 + 6x = -2x + 3

6x + 2x = 3 - 1

8x = 2

x = 2 : 8

x = 0,25