Question

A and b are the whole numbers and a is the predecessor of



b.Then a-b is

Answer 1

Given,

a and b are 2 whole numbers and a comes before b [predecessor].

Find, a-b.

We know that, the difference of a predecessor of a number and the number is always equal to the negative integer -1.

Proof :

If a=0, then b will be 1. [as a should be the predecessor of b]

Then,

a-b = 0-1 = -1.

Hence proved.

So, a-b=-1 [where a and b are whole numbers and a is the predecessor of b].

Answer 2

a is the predecessor of b.

Therefore,

$b - 1 = a \\ = > a - b = - 1$