Solve for x
x=\frac{87-7y}{2}
Solve for y
y=\frac{87-2x}{7}
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2x=87-7y
Subtract 7y from both sides.
\frac{2x}{2}=\frac{87-7y}{2}
Divide both sides by 2.
x=\frac{87-7y}{2}
Dividing by 2 undoes the multiplication by 2.
7y=87-2x
Subtract 2x from both sides.
\frac{7y}{7}=\frac{87-2x}{7}
Divide both sides by 7.
y=\frac{87-2x}{7}
Dividing by 7 undoes the multiplication by 7.
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