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Papá = t
s + t = 44
s - 4 = 1/8 (t - 4)
8s - 32 = t - 4
8s - 28 = t
Reemplazo el despeje
s + t = 44
s + (8s - 28) = 44
s + 8s - 28 = 44
9s = 44 + 28
9s =72
s = 72/9
s = 8
El valor de s reemplazo en ecuación 1
s + t = 44
8 + t = 44
t = 44 - 8
t = 36
El papá tiene 36 años
Pedro tiene 8 años