Question

by taking any suitable examples check if the commutative and associative laws are true for subtraction for rational numbers

Answer 1

The commutative and associative laws aren't true for subtraction of rational numbers.
Example:
-Commutative property--

4/2 -  3/2 = 1/2
but 
3/2 - 4/2 = -1/2
1/2 and -1/2 are not equal.
Thus, rational numbers don't satisfy commutative property under subtraction.
The same goes for associative property.

(6/2 - 1/2) - 3/2 = 2/2 =1
but
(1/2 - 6/2) - 3/2 = -7/2

1 and -7/2 aren't equal.

Answer 2

Nice Question

Step-by-step explanation:

$25 {8}^{5}$