c) -2/3 + x + 5/12 = 2 + x/4

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

-1 + 4 x = 8 + x

4 x - x = 8 + 1

3x = 9

x = 3

d) - x/5 - 1 - x/3 = 1/3

- 3 x - 15 - 5 x = 5

-8 x = 5+15

-8 x = 20

x = - 5/2

e) x-7/5 = 3

x- 7 = 15

x = 15 + 7

x= 22