Mathematics, 04.04.2020 22:50, allieballey0727

Lindsay is 5 55 years younger than Mark. Seven years ago, the sum of their ages was 31 3131. Let l ll be Lindsay's age and let m mm be Mark's age. Which system of equations represents this situation?

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Lindsay is 5 55 years younger than Mark. Seven years ago, the sum of their ages was 31 3131. Let l l...