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26 September, 00:23

The sum of twice a number and 4 is equal to the sum of the number and 8

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  1. 26 September, 03:47
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    4

    Step-by-step explanation:

    Variable: X = Unknown Number

    2x + 4 = x + 8

    2x - x = 8 - 4

    x = 4

    Check:

    2 (4) + 4 = 4 + 8

    8 + 4 = 12

    12 = 12
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