Solve for x
x=5-2y
Solve for y
y=\frac{5-x}{2}
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4x=20-8y
Subtract 8y from both sides.
\frac{4x}{4}=\frac{20-8y}{4}
Divide both sides by 4.
x=\frac{20-8y}{4}
Dividing by 4 undoes the multiplication by 4.
x=5-2y
Divide 20-8y by 4.
8y=20-4x
Subtract 4x from both sides.
\frac{8y}{8}=\frac{20-4x}{8}
Divide both sides by 8.
y=\frac{20-4x}{8}
Dividing by 8 undoes the multiplication by 8.
y=\frac{5-x}{2}
Divide 20-4x by 8.
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