Solve for x
x=\frac{y-11}{4}
Solve for y
y=4x+11
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4x+11=y
Swap sides so that all variable terms are on the left hand side.
4x=y-11
Subtract 11 from both sides.
\frac{4x}{4}=\frac{y-11}{4}
Divide both sides by 4.
x=\frac{y-11}{4}
Dividing by 4 undoes the multiplication by 4.
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