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Suppose the smaller number is x, then the bigger number is x+7

Their sum is 123 ie x + (x+7) = 123 or 2x + 7 = 123 or 2x = 123 - 7 = 116 so that x = 58 and then x+7 = 65

The two numbers are 58 and 65

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Q: What two numbers have the sum of 123 but the difference of 7?
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