Question 679247
3(-6) is -18
Therefore
(m+3)(-6) = {{{highlight_green(-6m-18)}}}
.....................
Delighted to help; feel free to email if you have further questions.
HomeworkHelpers@readingboosters.com
-Reading Boosters
Website: www.MyHomeworkAnswers.com 
Wanting for others what we want for ourselves.