Solve for y
y=\frac{5x-160}{9}
Solve for x
x=\frac{9y}{5}+32
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1.8y+32=x
Swap sides so that all variable terms are on the left hand side.
1.8y=x-32
Subtract 32 from both sides.
\frac{1.8y}{1.8}=\frac{x-32}{1.8}
Divide both sides of the equation by 1.8, which is the same as multiplying both sides by the reciprocal of the fraction.
y=\frac{x-32}{1.8}
Dividing by 1.8 undoes the multiplication by 1.8.
y=\frac{5x-160}{9}
Divide x-32 by 1.8 by multiplying x-32 by the reciprocal of 1.8.
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