Solve for k
k = \frac{7}{2} = 3\frac{1}{2} = 3.5
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2+4k-2k=9
Subtract 2k from both sides.
2+2k=9
Combine 4k and -2k to get 2k.
2k=9-2
Subtract 2 from both sides.
2k=7
Subtract 2 from 9 to get 7.
k=\frac{7}{2}
Divide both sides by 2.
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