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u-12 + h-12 = 42
2h-12 + h-12 = 42
2h + h = 42 + 12 + 12
3h = 66
h = 66/3
h = 22
u = 2h
u = 2*22
u = 44
comprobación:
u-12 + h-12 = 42
44-12 + 22-12 = 42
32+ 10 = 42
Respuesta:
Ls edades son:
Luisa: 44 años
Hija: 22 años