a)4/11x - 1/3 = 2/5
4/11x = 2/5 + 1/3
4/11x = 6/15 + 5/15
4/11x = 11/15
x = 11/15 : 4/11
x = 121/60
c) -6/7 - 1/5x = -4
1/5x = -6/7 - (-4)
1/5x = 22/7
x = 22/7 : 1/5
x = 110/7
e) -5/2 + x : 7 = -1/3
x : 7 = -1/3 - -5/2
x : 7 = 13/6
x = 13/6 × 7
x = 91/6