1/2{X-1/3[X-1/4(X-2/3]-2/3}＝x+3/4 （解方程）

Answer 1

从外向里去括号
1/2{X-1/3[X-1/4(X-2/3]-2/3}＝x+3/4
X-1/3[X-1/4(X-2/3]-2/3＝2x+3/2
-1/3[X-1/4(X-2/3]＝x+13/6
X-1/4(X-2/3)＝-3x-13/2
-1/4(X-2/3)＝-4x-13/2
X-2/3=16x+26
15x=-80/3
x=-16/9

Answer 2

1/2[X-1/3(3/4X+1/6)-2/3]=X+3/4
1/2(3/4X-13/18)=X+3/4
3/8X-13/36=X+3/4
5/8X=10/9
X=16/9