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Mathematics, 27.02.2021 04:10 Thejollyhellhound20

Martín ha gastado $30 comprando un libro para su madre y un CD de música para él. Al pagar, Martín ha usado:

x billetes de $10
8 monedas más de ¢50 que billetes de $10
El doble de monedas de ¢25 que de ¢50
Expresa el número de monedas de ¢25 y de ¢50 con las que ha pagado Martín en función de x, el número de billetes de $10.

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