The difference between 84 and 37 is 47, BUT the difference between 37 and 84 is -47 (a negative number). It all depends on which is the first number.
It is: (15+37)/2 = 26
It is: 50-37 = 13
59
37
37
18.
The Least Common Multiple (LCM) for 15 and 37 is 555.
16
15
-15
26