Question

a = bh
b = a - h
b = \frac{h}{a}
a
b
b = \frac{a}{h}
b = ah

Explanation:

Step1: Isolate $b$ by dividing both sides by $h$

Starting with $A = bh$, divide each side by $h$:
$\frac{A}{h} = \frac{bh}{h}$

Step2: Simplify the right-hand side

Cancel $h$ on the right:
$\frac{A}{h} = b$

Answer:

$\boldsymbol{b = \frac{A}{h}}$ (corresponding to the unlabeled option below option A)