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27 June, 19:33

Subtract: (4n + 7) - (7n - 8)

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  1. 27 June, 20:38
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    4n+7 - (7n-8)

    =4n+7+-1 (7n-8)

    =4n+7+-1 (7n) + (-1) (-8)

    =4n+7+-7n+8

    Combine Like Terms

    =4n+7+-7n+8

    = (4n+-7n) + (7+8)

    =-3n+15
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