Tìm x, biết: |3/4x - 5| - 2/3 = |-1/4|

Tìm x,biết

b) |3/4x-5|-2/3=|-1/4|

a) (3x-1) (-1/4 - 5x) (-2/7x + 3)=0

c)|-2/5 - 3x| - |-7/9 + 2x|=0

d) |-3/7x - 1| + |5+2/3x|=0

e)|3x-1|+|9x^2 - 1|=0

f) x+2/2018 + x+4/2016 = x+6/2014 - 1