Programmed Math/Subtraction

Prerequisites: Addition

Subtraction deals with the taking away of numbers, like number a from number b so that: a >= b while b > a. Such a case is with:

$$36 - 5 = 31$$.

a = 36 and b = 5.

So a — b = 36—５ = 31, a >= b is true.

a>=b, like $$36 - 5 = 31$$.

But b>a, for example : $$36 - 55 = -19$$.

a = 36 and b = 55.

$$a - b = 36 - 55 = -19$$.

Subtraction is the inverse of addition, meaning that it is the opposite.

$$31 + 5 = 36$$, $$36 - 5 = 31$$