Solve for x
x=3-y
Solve for y
y=3-x
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10x=30-10y
Subtract 10y from both sides.
\frac{10x}{10}=\frac{30-10y}{10}
Divide both sides by 10.
x=\frac{30-10y}{10}
Dividing by 10 undoes the multiplication by 10.
x=3-y
Divide 30-10y by 10.
10y=30-10x
Subtract 10x from both sides.
\frac{10y}{10}=\frac{30-10x}{10}
Divide both sides by 10.
y=\frac{30-10x}{10}
Dividing by 10 undoes the multiplication by 10.
y=3-x
Divide 30-10x by 10.
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