Solve for x
x=-\frac{8y}{9}+8
Solve for y
y=-\frac{9x}{8}+9
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y=9-\frac{9}{8}x
Divide each term of 72-9x by 8 to get 9-\frac{9}{8}x.
9-\frac{9}{8}x=y
Swap sides so that all variable terms are on the left hand side.
-\frac{9}{8}x=y-9
Subtract 9 from both sides.
\frac{-\frac{9}{8}x}{-\frac{9}{8}}=\frac{y-9}{-\frac{9}{8}}
Divide both sides of the equation by -\frac{9}{8}, which is the same as multiplying both sides by the reciprocal of the fraction.
x=\frac{y-9}{-\frac{9}{8}}
Dividing by -\frac{9}{8} undoes the multiplication by -\frac{9}{8}.
x=-\frac{8y}{9}+8
Divide y-9 by -\frac{9}{8} by multiplying y-9 by the reciprocal of -\frac{9}{8}.
y=9-\frac{9}{8}x
Divide each term of 72-9x by 8 to get 9-\frac{9}{8}x.
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