Side angle side or SAS
if you have any problems with my answer, write a comment and I will try to fix it.
Thanks!
Sum means add
the number is x
13 divided by a number is 13/x
the number divided by the number is x/13
so

also can be simplified to

or

translated it is

where x is the number
2-1/4
2/1=8/4 Multiply top and bottom by 4
8/4-1/4
7/4
1 3/4
Set as a proportion
16 = 12
------------------
5x+2 24
cross multiply
12(5x+2) = 16 * 24
60x +24 = 384
60x +24-24 = 384-24
60x =360
60x/60=360/60
x =6
To figure AB plug 6 into 5x+2
5x +2
5(6) + 2
30+2
32
AB = 32
G = the cost of one pack of gum
LeBron : 6 - 4g
James : 5 - 2g
what they both have after buying gum..
6 - 4g + 5 - 2g = 11 - 6g