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A two-digit number is 7 times the sum of its digits… | StemPy Lab

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A two-digit number is 7 times the sum of its digits. Interchanging the digits reduces the number by 27. What is the units digit?

MathematicsHardHigh School (9–10)GeneralAlgebra › Pairs of Linear Equations Olympiad SAT

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A two-digit number is $7$ times the sum of its digits. Interchanging the digits reduces the number by $27$ . What is the units digit?

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