Solve for k
k=-3.5
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2.2k=-3.7-4
Subtract 4 from both sides.
2.2k=-7.7
Subtract 4 from -3.7 to get -7.7.
k=\frac{-7.7}{2.2}
Divide both sides by 2.2.
k=\frac{-77}{22}
Expand \frac{-7.7}{2.2} by multiplying both numerator and the denominator by 10.
k=-\frac{7}{2}
Reduce the fraction \frac{-77}{22} to lowest terms by extracting and canceling out 11.
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