解:去小括号得:2[4x/3--2x/3+1/2]=5x/4
去中括号得:8x/3--4x/3+1=5x/4
去分母得: 32x--16x+12=15x
移项合并同类项得:x=--12。
2[4/3x-(2x/3-1/2)]=5/4 x
2(4/3x-2x/3+1/2)=5/4 x
2(2x/3+1/2)=5/4 x
4x/3-5x/4=-1
(16x-15x)/12=-1
x=-12
望采纳,若有疑问欢迎再提
8x/3-4x/3+1=5x/4
4x/3-5x/4=-1
16x-15x=-12
x=-12
2[4/3x-(2x/3-1/2)]=5/4 x
2(4/3x-2x/3+1/2)=5/4 x
2(2x/3+1/2)=5/4 x
4x/3-5x/4=-1
(16x-15x)/12=-1
x=-12
-12