Solve for k
k=2
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7+5k-8k=1
Subtract 8k from both sides.
7-3k=1
Combine 5k and -8k to get -3k.
-3k=1-7
Subtract 7 from both sides.
-3k=-6
Subtract 7 from 1 to get -6.
k=\frac{-6}{-3}
Divide both sides by -3.
k=2
Divide -6 by -3 to get 2.
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