Addition
4 + x = 7
x = 3
f = 6
3 x k = 9
k = 3
4 ÷ v = 2
v = 2
t + 12 = 20
t = 8
10 - b = 7
b = 3
w x 9 = 18
w = 2
15 ÷ m = 5
m = 3
5 + c + 9 = 19
c = 5
g - 10 = 15
g = 25
7 x p = 42
p = 6
s ÷ 5 = 5
s = 25
t + 6 =
t = 8
8 + 6 = 14
k - 12 =
k = 20
20 - 12 = 8
j x 4 =
j = 3
3 x 4 =
60 ÷ p =
p = 10
60 ÷ 10 = 6
p + 17 =
p = 6
6 + 17 = 23
15 - b =
b = 7
15 - 7 = 8
6 x c =
c = 6
6 x 6 = 36
28 ÷ n =
n = 7
n = 4