Answer
$$b = \frac{2A}{h}$$
The original equation is the formula to find the area of a triangle.
Work Step by Step
To solve this equation for $b$, we need to isolate $b$.
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 $h$ to isolate $b$:
$$b = \frac{2A}{h}$$
The original equation is the formula to find the area of a triangle.