Tìm x, biết: (x + 1)(x - 3/2) < 0; (x - 2)(x - 1/2) > 0; 2/5 + 1/4x = -3/10; (x + 4/7)(x - 8/9) = 0; (3x - 2)(2x - 2/3) = 0

tìm x, biết:
a. (x+1)(x-3/2)<0
b. (x-2)(x-1/2)>0
c. 2/5+1/4x=-3/10
d. (x+4/7)(x-8/9)=0
e. (3x-2)(2x-2/3)=0
f. 2/3-1/3(x-3/2)-1/2(2x+1)=5
g. (x+1/2).(x-3/4)=0
h. 1/3x+2/5(x+1)=0