Question

Commutative property for integers holds good for which of the arithmetic operations?

• A. Subtraction
• B. Addition
• C. Both A & B
• D. None of the above

Answer 1

The correct option is B Addition

Commutative property for subtraction:
If ‘a’ and ‘b’ are integers, is $a-b=b-a$? Of course, it doesn’t hold good for any integer.

e.g. If $a=4$ and $b=3$; $a-b=4-3=1$ and $b-a=3-4=-1$, the results are not same.

Commutative property for addition:
If ‘a’ and ‘b’ are integers, $a+b=b+a$. This holds good.
If $a=2$ and $b=-7$, $a+b=2+(-7)=2-7=-5$ and $b+a=-7+2=-5$, the results are same.

So, only addition operation follows commutative property for integers.