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4 x - 5 = -  8+  7 x

4 x - 7 x = -  8 + 5

- 3 x = - 3

x = 1

3 x /2 - 4 = 2 x + 1/3

9 x /6 - 24/6 = 12 x /6 + 2/6

9 x - 12 x = 2 + 24

- 3 x = 26

x = - 26/3

3 / ( 3 x + 2 )  = 7 / ( 8 x - 1 )

24 x - 3 = 21 x + 14

24 x - 21 x =  14 + 3

3 x = 17

x = 17/3