Solve for k
k=2
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-14k+28-6=7k-20
Use the distributive property to multiply 7 by -2k+4.
-14k+22=7k-20
Subtract 6 from 28 to get 22.
-14k+22-7k=-20
Subtract 7k from both sides.
-21k+22=-20
Combine -14k and -7k to get -21k.
-21k=-20-22
Subtract 22 from both sides.
-21k=-42
Subtract 22 from -20 to get -42.
k=\frac{-42}{-21}
Divide both sides by -21.
k=2
Divide -42 by -21 to get 2.
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