7(k-3) - (6k-6) - 7
= 7*k - 7*3 - 6k -(-6) - 7
= 7k - 21 - 6k + 6 - 7
= 7k - 6k - 21 + 6 - 7
= k - 22
Alexis D.
asked 08/25/15
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Alexis D.
08/25/15