Solve for y
y=-\frac{x}{9}
Solve for x
x=-9y
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9y=-x
Subtract x from both sides. Anything subtracted from zero gives its negation.
\frac{9y}{9}=-\frac{x}{9}
Divide both sides by 9.
y=-\frac{x}{9}
Dividing by 9 undoes the multiplication by 9.
x=-9y
Subtract 9y from both sides. Anything subtracted from zero gives its negation.
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