Solve for w
w=\frac{x+7}{4}
Solve for x
x=4w-7
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4w-7=x
Swap sides so that all variable terms are on the left hand side.
4w=x+7
Add 7 to both sides.
\frac{4w}{4}=\frac{x+7}{4}
Divide both sides by 4.
w=\frac{x+7}{4}
Dividing by 4 undoes the multiplication by 4.
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