(Originais Teachy 2023) - Question Medium of MathJoão was saving money to buy a gift for his mother. He started saving R$ 5 per month and then increased the amount saved to R$ 10 each subsequent month. Consider x as the number of months João saved R$ 5 and y as the number of months he saved R$ 10. If the total saved was R$ 100, then follow the steps below to determine the values of x and y: a) Write the mathematical equation that represents the situation. b) Use the mathematical equality relationship and solve the equation to find the relationship between x and y. c) Find the possible values of x and y that solve the equation and meet the conditions of the problem.
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