Solve for x
x=\frac{y-19}{4}
Solve for y
y=4x+19
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y-3=4x+16
Use the distributive property to multiply 4 by x+4.
4x+16=y-3
Swap sides so that all variable terms are on the left hand side.
4x=y-3-16
Subtract 16 from both sides.
4x=y-19
Subtract 16 from -3 to get -19.
\frac{4x}{4}=\frac{y-19}{4}
Divide both sides by 4.
x=\frac{y-19}{4}
Dividing by 4 undoes the multiplication by 4.
y-3=4x+16
Use the distributive property to multiply 4 by x+4.
y=4x+16+3
Add 3 to both sides.
y=4x+19
Add 16 and 3 to get 19.
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