Let A, B and C be three positive integers such that the sum of A and the mean of B and C is 5. In&nbsp;addition, the sum of B and the mean of A and C is 7. Then the sum of A and B is

1 year ago

Let A, B and C be three positive integers such that the sum of A and the mean of B and C is 5. In addition, the sum of B and the mean of A and C is 7. Then the sum of A and B is

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