3⼀2[2⼀3(x⼀5-1)+2]-x=6

3/2[2/3(x/5-1)+2]-x=6
(x/5-1)+3-x=6
x/5-1+3-x=6 两边同时乘以5得
x-5+15-5x=6
5x-x=-5+15-6
4x=4
x=1

(0.4x+0.1)/0.5-(0.01-0.2x)/0.04=5.75 两边同时乘以1得

2(0.4x+0.1)-25(0.01-0.2x)=5.75
0.8x+0.2-0.25+5x=5.75
5x+0.8x=5.75-0.2+0.25
5.8x=5.8
x=1

1/2x-2[1-1/4(x-3)]=x+1/2(x-3)

1/2x-2+1/2(x-3)=x+1/2x-3/2
1/2x-2+1/2x-3/2=x+1/2x-3/2
x+1/2x-1/2x-1/2x=-2-3/2+3/2
1/2x=-2
x=-4

3/2[2/3(x/5-1)+2]-x=6
x/5-1+3-x=6
4x/5=4

x=5

(0.4x+0.1）/0.5-（0.01-0.2x）/0.04=5.75
2(0.4x+0.1)-25(0.01-0.2x)=5.75
0.8x+0.2-0.25+5x=5.75
5.8x=5.8
x=1

1/2x-2[1-1/4(x-3)]=x+1/2(x-3)
1/2x-2+1/2x-3/2=x+1/2x-3/2
-1/2x=2
x=-4