the sum of twice a number and 7 is equal to the sum of the number and 8

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the sum of twice a number and 7 is equal to the sum of the number and 8

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    2021-09-06T02:28:47+00:00

    (4)2 + 7= 15.

    15-7=8.

    I would say that number is 4 because 4+4= 8, and 8+7 =15.

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