Tìm x, biết |3x-1|+|5-2x|+4+2x

tìm x biết
a, |3x-1|+|5-2x|+4+2x
b,4-|x+2|+|3x+1|=x
c.|x+3| + |2x+-5|=3x+1 
d,|5x-1|+|x+3|=4-2x