6 класс без лишнего, только ответ.

Пошаговое объяснение:

1)

2x + 5 = -2x + 2 + 11

2x + 5 = -2x + 13

2x + 2x = 13 - 5

4x = 8

x = 8 : 4

x = 2

2)

6y - 3y + 3 = 4 + 5y

3y + 3 = 4 + 5y

5y - 3y = 3 - 4

2y = -1

y = -1 : 2

y = -0,5

3)

4x - 4 - 3 = -x - 7 + 8

4x - 7 = -x + 1

4x + x = 1 + 7

5x = 8

x = 8 : 5

x = 1,6

4)

-10y + 18 + 2 = 15 - 7y + 14

-10y + 20 = 29 - 7y

10y - 7y = 20 - 29

3y = -9

y = -9 : 3

y = -3

5)

12 + 4x - 12 - 2x = 5 - 3x + 9

2x = 14 - 3x

2x + 3x = 14

5x = 14

x = 14 : 5

x = 2,8