Решите уравнения

10 х+7=8 х-9

52-6 х=4 х-17

8+2 х=16+х

1) 10x + 7 = 8x - 9

10x - 8x = - 9 - 7

2x = - 16

x = - 8

2) 52 - 6x = 4x - 17

- 6x - 4x = - 17 - 52

- 10x = - 69

x = 6,9

3) 8 + 2x = 16 + x

2x - x = 16 - 8

x = 8

1)

(10x-8x) + 7 = (8x-8x)

2x+7 = (8x-8x) - 9

2x+7=-9

2x + (7-7) = - 7-9

2x=-16

2x/2=-16/2

x=-16/2

x=-8

2)

52 + (-6x-4x) = (4x-4x) - 17

-10x+52 = (4x-4x) - 17

52-10x=-17

(52-52) - 10x=-52-17

-10x=-52-17

-10x=69/10

x=6,9

3)

(2x-x) + 8 = (x-x) + 16

x+8 = (x+x) + 16

x+8=16

x + (8-8) = 16-8

x=16-8

x=8