Question

100-3{1+5[10:(x+2)-1]-2}=88

Answer 1

100-3{1+5[10:(x+2)-1]-2}=88
3{1+5[10:(x+2)-1]-2} = 100 - 88
3{1+5[10:(x+2)-1]-2} = 12
3{1+5[10:(x+2)-1]-2} = 12:3
1+5[10:(x+2)-1]-2 = 4
5[10:(x+2)-1] = 4-1+2
5[10:(x+2)-1] = 5
10:(X+2)-1 = 5:5
10:(X+2)-1 = 1
10:(X+2) = 1+1
10:(X+2) = 2
X+2 = 10:2
X+2 = 5
X = 5-2
X = 3