em uma loja de roupa sai com promoção de calças bermudas e camisetas cada calça custava X reais cada bermuda custava Y reais e cada camiseta custava Z reais. três colegas João, Antônio e Roberto compraram alguns desses produtos.
• João comprou 4 calças 3 bermudas e 5 camisetas
• António comprou uma calça 6 bermudas e quatro camisetas
• Roberto comprou uma calça 6 bermudas e quatro camisetas
a) represente algebricamente a compra de João
b) represente algébricamente a compra de Antônio
c) represente algébricamente a como de Roberto
Soluções para a tarefa
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