Solve for x
x=\frac{y-405}{27}
Solve for y
y=27\left(x+15\right)
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27x+405=y
Swap sides so that all variable terms are on the left hand side.
27x=y-405
Subtract 405 from both sides.
\frac{27x}{27}=\frac{y-405}{27}
Divide both sides by 27.
x=\frac{y-405}{27}
Dividing by 27 undoes the multiplication by 27.
x=\frac{y}{27}-15
Divide y-405 by 27.
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