Question

verify the closure property for addition of rational numbers-5/7 and 8 /9​

Answer 1

Given:

★Two nos. -5/7 & 8/9.

To Prove:

★The closure property.

Proof:

Closure property for two nos. a & b is

★If we add or subtract two rational nos.then resultant is also rational.

$\rule{200}3$

→Adding them:-

=-5/7+8/9

=-45+40/63

=-5/63.

which is also rational .

Hence verfied