°° Let's see -
First, subtract 16 from 36.
36 - 16 = 20
Now, what times 2 = 20? If you don't know the answer, let's work it out:
20 ÷ 2 = 10
So, m is 10.
Want to check your answer?
Twice a number (10) goes first.
10 × 2 = 20
Now add 16 and see what you get!
20 + 16 = 36
We were right!
↑ ↑ ↑ Hope this helps! :D