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Let's solve a math problem? Interpretation of problems involving first-degree equations! Get to know the platform: www.talembrando.com Math exercises like this always appear. First-degree equation, system of equations. A big hug, Professor Rafa Jesus Statement: Pucrs 2017 - A payment of R$280.00 WAS MADE USING ONLY R$20.00 AND R$5.00 NOTES. Knowing that 20 notes were used in total, the number of R$20.00 notes used to make the payment is a number: a) odd b) prime c) multiple of 7 d) multiple of 5 e) multiple of 4 #mathematics #education #enem