## Introductory Algebra for College Students (7th Edition)

$$h = \frac{2A}{b}$$ The original equation is the formula to find the area of a triangle.
To solve this equation for $h$, we need to isolate $h$. We first divide each side by $\frac{1}{2}$. To divide by a fraction is to multiply by its inverse. The inverse of $\frac{1}{2}$ is $2$: $$2A = bh$$ We now divide each side by $b$ to isolate $h$: $$h = \frac{2A}{b}$$ The original equation is the formula to find the area of a triangle.