Algebra 1

$x=\frac{a(y+b)}{b}$
$\frac{x}{a}=\frac{y}{b}+1$ Add 1 to both sides. $=\frac{y}{b}+\frac{b}{b}$ 1 is also equal to $\frac{b}{b}$. $=\frac{y+b}{b}$ $x=\frac{a(y+b)}{b}$ Multiply both sides by a.