39=3m-15
39+15=3m
54=3m
54/3=3m/3
m=18
Here is how to graph it :) :
The answer is 62
First you would have to add the ones in the parentheses 5+9=14 then you would have to multiply it by the 4 [4 14]giving you 56. Then 56+6= 62
I think 6 of each. I divided 15 by 2, got $7.50. You can buy exactly six magazines w that, and 6.5 granola bars. So six of each.