[tex]\huge\boxed{x=3-\frac{8}{y}}[/tex]
[tex]y=\frac{8}{3-x}[/tex]
Multiply both sides of the equation by [tex](3-x)[/tex]. [tex]y(3-x)=8[/tex]
Divide both sides by [tex]y[/tex]. [tex]3-x=\frac{8}{y}[/tex]
Subtract [tex]3[/tex] from both sides. [tex]-x=\frac{8}{y}-3[/tex]
Multiply both sides by [tex]-1[/tex], making everything opposite. [tex]\boxed{x=3-\frac{8}{y}}[/tex]