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AYUDA POR FAVOR EL TEMA ES DE EDADES

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166 cents Kulalbine
Answer:

24

x = mi edad =12

y = edad hermano

hace 3 años :

x-3/y-3=1/2

2x-6=y-3

2x-3=y

24-3=y

y=21

piden y+3

21+3 = 24

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