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12 February, 23:50

Find two numbers whose sum is 42 and whose difference is 16.

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  1. 13 February, 01:39
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    A + b = 42

    a - b = 16 = = > a = b + 16

    b + 16 + b = 42

    2b + 16 = 42

    2b = 42 - 16

    2b = 26

    b = 26/2

    b = 13 <===

    a = b + 16

    a = 13 + 16

    a = 29 <===
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