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gasta 3/8de x = 3x/8 y 5/12 de x = 5x/12
x = 3x/8 + 5x /12 +135
x -3x/8 -5x/12 = 135 el mcm de 3y12 = 24
24x/24 - 9x/24 - 10x/24 = 135
5x/24 = 135
x = 135*24/5 simplificando sacando quinta
x = 27 *24
x = 648
dinero que tenia = $ 648