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Mathematics, 30.04.2021 09:50 MysteryDove12

Si compro ocho bolígrafos y cuatro lápices, me cuesta doce euros. ¿Cuánto cuesta cada artículo si un bolígrafo cuesta noventa céntimos más que un lápiz?

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Si compro ocho bolígrafos y cuatro lápices, me cuesta doce euros. ¿Cuánto cuesta cada artículo si...
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