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monedas de 1€ x
monedas de 0,50€ x
2x + 1x + 0,50x = 56
3,50x = 56
x =
Hay 16 monedas de cada una.
Prueba: 2(16)+ 1(16) + 0,50(16) = 32 + 16 + 8 = 56€