Answer
The distributive property of multiplication over addition states that for any real numbers $a, b, $ and $c$:
$a \cdot (b + c)= a \cdot b + a \cdot c$
In other words, distributing a number that is being multiplied by a set of parentheses to every term inside of the parentheses is a valid step.
Example:
$3 \cdot(4 + 5) = 3 \cdot 4 + 3 \cdot 5$
Notice that both are equal to 27.
Work Step by Step
The distributive property of multiplication over adition states that for any real numbers $a, b, $ and $c$.
$a \cdot (b + c)= a \cdot b + a \cdot c$
Example:
$3 \cdot(4 + 5) = 3 \cdot 4 + 3 \cdot 5$
Notice that both are equal to 27.
