WOW!
42
16
√49
7
53
125
33
27
√121
11
√144
12
3√27
3
√81
9
√25
5
9x=81
x=9
6(x+3)=48
x=5
71 x 7-1
70=1
7(3+n)=56
n=5
h4 x h4
h8
21 x 2
22 =4
5k+37-7k+7
-2k+44
5(x-8)=10
x=10
6(2+x)=42
x=5
k-9 x k7
k-2
110
1
156÷4
39
1971 ÷ 9
219
2(x-10)=30
x=25
2(n+6)=26
n=7
78 x 3
234