Solve for x
x=75-3y
Solve for y
y=-\frac{x}{3}+25
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6x=450-18y
Subtract 18y from both sides.
\frac{6x}{6}=\frac{450-18y}{6}
Divide both sides by 6.
x=\frac{450-18y}{6}
Dividing by 6 undoes the multiplication by 6.
x=75-3y
Divide 450-18y by 6.
18y=450-6x
Subtract 6x from both sides.
\frac{18y}{18}=\frac{450-6x}{18}
Divide both sides by 18.
y=\frac{450-6x}{18}
Dividing by 18 undoes the multiplication by 18.
y=-\frac{x}{3}+25
Divide 450-6x by 18.
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