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Amparo = m
Resolvemos.
m + 5 + m = 73
m + m + 5 = 73
2m + 5 = 73
2m = 73 - 5
2m =68
m = 68/2
m = 34
m + 5 = 34 + 5 = 39
Solcuión.
Juana tiene 39 años
Amparo tiene 34 años
x + 5 = Juana
x + 5 + x = 73
2x = 73 - 5
2x = 68
x = 34
x + 5 = 39