Answer:
The answer when solving this problem would be 40, but to simplify I am not exactly sure. I would defenitely use photomath if you could. Math is not my strong suit so this answer could very well be all sorts of wrong. Photomath helps to explain how to do the problem thoroughly. When typing the answer into this app be sure to include simplify.
Explanation:
PEMDAS. (solve)
24-(6+9)/3+42/2
24-(15)/3+42/2
24-(5)+42/2
24-(5)+21
19+21
=40