Answer:
I believe to answer to m would be 4
Explanation:
Given knowing that 2m + 5 is equal to 13, you could always subtract to find m.
13 - 5 = 8
Given 8, we know that any number multiplying by 2 would have the answer of 8. You could divide 8 by 2 to find your missing variable.
8 ÷ 2 = 4
Which leaves you with 4, which means 4 is your missing variable.
m = 4
13 = 2(4) + 5