Solve for k
k=-\frac{1}{7}\approx -0.142857143
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117k-12k=-15
Subtract 12k from both sides.
105k=-15
Combine 117k and -12k to get 105k.
k=\frac{-15}{105}
Divide both sides by 105.
k=-\frac{1}{7}
Reduce the fraction \frac{-15}{105} to lowest terms by extracting and canceling out 15.
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