1/2{1/2［1/2(1/2y-3)-3］-3}=1
7x-1/0.024=1-0.2x/0.08-5x+1/0.02
0.1x-0.4/1.2-1=0.2x+1/0.3
/是分数线
我把一个一个分数分开写
1/2 { 1/2 ［ 1/2 ( 1/2 y -3)-3］-3}=1
7x-1/0.024 =1-0.2x/0.08 - 5x+1/0.02
0.1x-0.4/1.2 - 1 = 0.2x+1/0.3