Question

a-3=12 y t 8=12 m-7=13

Answer 1

Tenemos.

A - 3 = 12
A = 12 + 3
A = 15


m - 7 = 13
m = 13 + 7
m = 20

t + 8 = 12
t = 12 -8
t = 4

t - 8 = 12
t = 12 + 8
t = 20