56 / x = 7
88 / 8
5 x 6 + 8
(13) (x) = 117
23+56+12
(8) (x) = 3,200
15 + 18 - 5
Cuadrado de 12
23 + 26 - 21 - 22
8 + 4 - 5
6 / 6
8
38
11
400
7
144
6
1
91
9
28
