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c+3 = 3(h+3)
c = 4h-20+5 = 4h-15
4h-15+3 = 3h+9
4h-3h = 9+15-3
h = 21
c = 4h-15
c = (4*21) - 15
c = 84-15
c = 69
comprobación:
c+3 = 3(h+3)
69+3 = 3(21+3)
72 = 3*24
Respuesta:
Hija: 21 años
Carolina: 69 años