1/2[x-1/3(x-1)]=3/4(2x+1)
两边同时乘以4,得
2[x-1/3(x-1)]=3(2x+1)
2(x-1/3x+1/3)=6x+3
4/3x+2/3=6x+3
两边同时乘以3,得
4x+2=18x+9
-14x=7
x=-1/2
2x+1/3=2-x+1 2x+x=3+1/3 x=10/3 2) 2(x-1)/3=x-1 解: x- =x-1 x-x= -1 - x=- x=1 3) 1+(3-x/2)=(x+4/3)
1/2(2/3X+1/3)=3/2X+3/4
x=-1/2