1/2[x-1/2(x-1)]=3/4x-1
1/2（x-1/2x+1/2）=3/4x-1
1/2x-1/4x+1/4=3/4x-1
2/4x-1/4x-3/4x= -1-1/4
-1/2x= -5/4
x= -5/4*(-2)
x=5/2可以有图么 我太乱了用方程两边同时乘以4去除分母，这样你看的懂了吧 原式=2（x-1/2x+1/2）=3x-42x-x+1=3x-42x-x-3x= -4-1-2x= -5x=5/2