Solve for x
x=\frac{y-20}{5}
Solve for y
y=5\left(x+4\right)
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-5x-10=10-y
Subtract y from both sides.
-5x=10-y+10
Add 10 to both sides.
-5x=20-y
Add 10 and 10 to get 20.
\frac{-5x}{-5}=\frac{20-y}{-5}
Divide both sides by -5.
x=\frac{20-y}{-5}
Dividing by -5 undoes the multiplication by -5.
x=\frac{y}{5}-4
Divide 20-y by -5.
y-10=10+5x
Add 5x to both sides.
y=10+5x+10
Add 10 to both sides.
y=20+5x
Add 10 and 10 to get 20.
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