Answer
$\underline{7} \cdot (4+5) = 7 \cdot 4 + 7\cdot 5$
Work Step by Step
The distributive property states that for any real numbers $a, b, $ and $c$,
$a(b+c) =a\cdot b+a \cdot c$
Thus, apply the distributive property to the given problem to find:
$7 \cdot (4+5) = 7 \cdot 4 + 7\cdot 5$