Tìm x: 4/5. x - 2/3 = 1/5

Bài 7: Tìm x
a, 4/5. x- 2/3= 1/5
b. 39/7: x= 13
c, ( 3/15- x): 3= 2/5
d, ( 3/2- x). 8/3= 16/3
e, 1/2. x- 3/4= -5/4
g, 3/2. x- 4/7= 1/3