Question

помогите пожалуйста​

Answer 1

Ответ:

1)2

2)-8

3)6.5

4)-21

Объяснение:

1)

5-2x = 8x+10

-2x -8x = 10-5

10x = 5

x = 2

2)

3-4x = 4x -5

-4x - 4x = -5-3

x = -8

3)

2(x-5)=3

2x-10 = 3

2x = 3+10

2x = 13

x = 6.5

4)

4(7+x) = 7+3x

28+ 4x = 7+3x

4x - 3x = -28+7

x = -21