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5 ( 2x - 5 ) = - 25

10x - 25 = - 25

10x = - 25 + 25

10x = 0

x = 0 / 10

x = 0

6(3x - 2) = 24

18x - 12 = 24

18x = 24 + 12

18x = 36

x = 36 / 18

x = 2

9(3x - 7) = 18

27x - 63 = 18

27x = 18 + 63

27x = 81

x = 81 / 27

x = 3

2(x + 8) = 40 - x

2x + 16 = 40 - x

2x + x = 40 - 16

3x = 24

x = 24 / 3

x = 8

3(8x - 2) = 4(5x + 6)

24x - 6 = 20x + 24

24x - 20x = 24 + 6

4x = 30

x = 30 / 4

x = 15 / 2

2(3x - 7) = 4x - 6

6x - 14 = 4x - 6

6x - 4x = - 6 + 14

2x = 8

x = 8 / 2

x = 4.