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15 September, 03:08

How do you do this step by step - 7 (-3n+3) = -21+21n

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  1. 15 September, 05:09
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    Step-by-step explanation:

    -7 (-3n+3) = 21n-21

    Because - 7*-3n gives you 21n and - 7 times 3 gives you - 21.
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