Solve for a 60=a(0+5)(0+3)

$60 = a (0 + 5) (0 + 3)$

Rewrite the equation as $a (0 + 5) (0 + 3) = 60$ .

$a (0 + 5) (0 + 3) = 60$

Simplify.

Add $0$ and $5$ .

$a \cdot 5 (0 + 3) = 60$

Add $0$ and $3$ .

$a \cdot 5 \cdot 3 = 60$

Multiply $3$ by $5$ .

$a \cdot 15 = 60$

Divide each term in $(a \cdot 15) = 60$ by $15$ and simplify.

Divide each term in $(a \cdot 15) = 60$ by $15$ .

$\frac{(a \cdot 15)}{15} = \frac{60}{15}$

Simplify the left side.

Cancel the common factor of $15$ .

Cancel the common factor.

$\frac{a \cdot 15}{15} = \frac{60}{15}$

Divide $a$ by $1$ .

$a = \frac{60}{15}$

Simplify the right side.

Divide $60$ by $15$ .

$a = 4$