Question

Verify that x-y isa rational number when​

Answer 1

Answer:

(i) x-y

= 1-5/7

= 7/7-5/7

= 2/7

So, 2/7 is a rational no.

(ii) x-y

= -3/7-(-2/5)

= -3/7+2/5

= 11.6666.../35+14/35

= 25.6666..../35

So, it is also a rational no.

Step-by-step explanation:

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