Solve for y
y=-\frac{x}{7}
Solve for x
x=-7y
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-7y=x
Swap sides so that all variable terms are on the left hand side.
\frac{-7y}{-7}=\frac{x}{-7}
Divide both sides by -7.
y=\frac{x}{-7}
Dividing by -7 undoes the multiplication by -7.
y=-\frac{x}{7}
Divide x by -7.
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