Tìm x

Tìm x; biết:

a) x - 5/12 = - 7/8

b) 5x + 3, 7 = - 12, 65

c) 3/8 x - 7/12 = 0, 75

d) 5/6 x - 7/9 - 5/7 x = - 5/6

e) (0,75x-3/8)÷ 1^5/16 - 2/15 = 80%