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29 November, 05:09

What is the answer to - 1+|n+7|=10?

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  1. 29 November, 05:21
    0
    -18,4

    Step-by-step explanation:

    (add one to both sides) : |n+7|=11

    (subtract 7) : n=4

    (go back to the equation before and change the sign) : |-n-7|=11

    (add 7 to both sides) : - n=18

    (multiply by - 1) : n=-18
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