Solve for x
x=-\frac{y}{1500}+30
Solve for y
y=45000-1500x
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-1500x+45000=y
Swap sides so that all variable terms are on the left hand side.
-1500x=y-45000
Subtract 45000 from both sides.
\frac{-1500x}{-1500}=\frac{y-45000}{-1500}
Divide both sides by -1500.
x=\frac{y-45000}{-1500}
Dividing by -1500 undoes the multiplication by -1500.
x=-\frac{y}{1500}+30
Divide y-45000 by -1500.
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