Solve for k
k=\frac{m-7}{4}
Solve for m
m=4k+7
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4k+7=m
Swap sides so that all variable terms are on the left hand side.
4k=m-7
Subtract 7 from both sides.
\frac{4k}{4}=\frac{m-7}{4}
Divide both sides by 4.
k=\frac{m-7}{4}
Dividing by 4 undoes the multiplication by 4.
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