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Ana =3B 3B + 4
Beto = B B + 4
=> B + 4 = (8/9)(3B + 4)
9(B + 4) = 8(3B + 4)
9B + 36 = 24B + 32
36 - 32 = 24B - 9B
4 = 15B
4/15 = B
=> Hallando la edad de ana
A = 3B
A = 3(4/15)
A = 4/5
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