## Elementary and Intermediate Algebra: Concepts & Applications (6th Edition)

$b=\dfrac{A}{h}$
$\bf{\text{Solution Outline:}}$ To solve the given equation, $A=bh$ for $b,$ use the properties of equality to isolate the variable. $\bf{\text{Solution Details:}}$ Using the properties of equality to isolate the variable, the equation above is equivalent to \begin{array}{l}\require{cancel} A=bh \\\\ \dfrac{A}{h}=\dfrac{bh}{h} \\\\ \dfrac{A}{h}=b \\\\ b=\dfrac{A}{h} .\end{array}