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Mathematics, 05.11.2020 17:00 hargunk329

Em uma loja, um livro custa x reais e um caderno custa y reais. Qual é a expressão algébrica que
representa o fato de Marina comprar 8 livros e 10
cadernos iguais a esses na loja?

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Em uma loja, um livro custa x reais e um caderno custa y reais. Qual é a expressão algébrica que

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