Please Help! I will give you a lot of points if you do! --This is Hindu-Arabic math so you wouldn't use our regular number system to solve this problem. Use need to use the number system that is provided in the picture; it says 0,1,2,3,4,...19

66

Step-by-step explanation:

I believe this is correct, hope it helps!

the difference between a number and 5 is -2.

step-by-step explanation:

notice that the equation you are given has -2 (negative 2) on the right side, not 2. when you subtract 5 from a number n, you are finding the difference between the number and 5.

the difference between a number and 5 is -2.