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7 - 7k - 6k = -7k - 7k
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1 vote
7 - 7k - 6k = -7k - 7k

User Brian Teeter
by
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1 Answer

3 votes

You can cancel out a -7k term, because it appears in both sides:


7-6k = -7k

Now add 6k to both sides:


7 = -k

change sign to both sides:


k = -7

User Dezzan
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