(1-2x)/3=(3x-4)/7+2
7(1-2x)=3(3x-4)+42
7-14x=9x-12+42
-23x=23
x=-1
3/2[2/3(x/4+1)+2]-2又1/2=2/3x
(x/4+1)+3-5/2=2x/3
x/4+3/2=2x/3
3x+18=8x
x=3.6