Solve for x
x=\frac{255-9y}{7}
Solve for y
y=-\frac{7x}{9}+\frac{85}{3}
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7x=255-9y
Subtract 9y from both sides.
\frac{7x}{7}=\frac{255-9y}{7}
Divide both sides by 7.
x=\frac{255-9y}{7}
Dividing by 7 undoes the multiplication by 7.
9y=255-7x
Subtract 7x from both sides.
\frac{9y}{9}=\frac{255-7x}{9}
Divide both sides by 9.
y=\frac{255-7x}{9}
Dividing by 9 undoes the multiplication by 9.
y=-\frac{7x}{9}+\frac{85}{3}
Divide 255-7x by 9.
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