Question

solve for a in terms of b, c, and d.
$b = -\frac{1}{a}cd$
$a = $

Explanation:

Step1: Multiply both sides by $a$

$b \times a = -\frac{1}{a}cd \times a$
$ab = -cd$

Step2: Divide both sides by $b$

$\frac{ab}{b} = \frac{-cd}{b}$

Answer:

$\frac{-cd}{b}$