Solve for x
x=\frac{y}{8}+0.45
Solve for y
y=8x-3.6
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8x-3.6=y
Swap sides so that all variable terms are on the left hand side.
8x=y+3.6
Add 3.6 to both sides.
\frac{8x}{8}=\frac{y+3.6}{8}
Divide both sides by 8.
x=\frac{y+3.6}{8}
Dividing by 8 undoes the multiplication by 8.
x=\frac{y}{8}+\frac{9}{20}
Divide y+3.6 by 8.
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