Chapter 2 - Solving Equations - 2-5 Literal Equations and Formulas - Practice and Problem-Solving Exercises - Page 112: 24

$x=\frac{ya}{b}$

We are trying to isolate the $x$ term in the equation: $\frac{x}{a}=\frac{y}{b}$ To do this, we multiply both sides of the equation by $a$: $\frac{x}{a}\times a=\frac{y}{b}\times a$ We then simplify on both sides of the equation: $x=\frac{ya}{b}$