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Claudia = x
Hace 5 años era el cuádruple = 4 (x - 5)
3x - 5 = 4 (x - 5)
3x - 5 = 4x - 20
3x - 4x = - 20 + 5
- x = - 15
x = 15
3x = 3 (15) = 45
Andrés tiene 45 años
Claudia tiene 15 años
Opción C)