Question

Is division of rational numbers commutative and associative ? Justify this with the help of examples.​

Answer 1

Answer:

Commutative and Associative laws not hold in rational numbers.

Step-by-step explanation:

Since every integer is the rational number so we take two integer 2 and 3 which are also rational number with denominator 1

And

2 / 3 = 0.0666.....

3 / 2 = 1.5

so

2 / 3 ≠ 3 /2

Thus commutative law of division in rational number is not hold.

Now

Take 2 , 3 and 4 rational numbers with denominator 1

Then

2 / ( 3 / 4 ) = 2 / ( 0.75 ) = 2 / 0.75 = 2.6666....

( 2 / 3 ) / 4 = ( 0.6666.... ) / 4 = 0.1666.....

So

2 / ( 3 / 4 ) ≠ ( 2 / 3 ) / 4

Thus associative law of division is not hold in rational numbers.

Answer 2

Answer:

a-b≠b-a,and a÷b≠b÷a...

I hope it's help..

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