If I were to give 7 pennies to each beggar at my door, I would have 24 pennies left in my purse. I lack 32 pennies to be able to give each 9 pennies apiece. How many beggars are there and how much money do I have?

*Algebra*, Christopher Clavius, 1608

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The answer is: 28 beggars, 220 pennies