I'm not sure what this entire question is, but I believe your answer is:
Symmetric Property.
<em>Please let me know if I'm wrong! I hope this helps anyways, goodluck!</em>
so you would multiply 3 by the sum of 24 and 9...
3(24+9)=3(33)=99
Answer:
Step-by-step explanation:
2(20 + 22) = 2(42) = 84 total books