Solve for k
k = \frac{17}{7} = 2\frac{3}{7} \approx 2.428571429
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-7k=-21+4
Add 4 to both sides.
-7k=-17
Add -21 and 4 to get -17.
k=\frac{-17}{-7}
Divide both sides by -7.
k=\frac{17}{7}
Fraction \frac{-17}{-7} can be simplified to \frac{17}{7} by removing the negative sign from both the numerator and the denominator.
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