Solve for b ab-d=c

$a b - d = c$

Add $d$ to both sides of the equation.

$a b = c + d$

Divide each term in $a b = c + d$ by $a$ and simplify.

Divide each term in $a b = c + d$ by $a$ .

$\frac{a b}{a} = \frac{c}{a} + \frac{d}{a}$

Simplify the left side.

Cancel the common factor of $a$ .

Cancel the common factor.

$\frac{a b}{a} = \frac{c}{a} + \frac{d}{a}$

Divide $b$ by $1$ .

$b = \frac{c}{a} + \frac{d}{a}$