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21 May, 18:57

What must be subtracted from 7 to get - 6?

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  1. 21 May, 20:56
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    Let the number be x.

    x must be subtracted from 7 to get - 6:

    ⇒ 7 - x = - 6

    Solve x:

    7 - x = - 6

    -x = - 6 - 7 | take away 7 from both sides

    -x = - 13 | Combine like terms

    x = 13 | Divide by - 1 on both sides

    Answer: x = 13
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