Question

Can someone help me pleasee

Answer 1

Answer:

1 . No ,

As -1 ( 1 / 8 ) = -9 / 8 & it's reciprocal is ( - 8 / 9 )

not ( - 8 / 7 ) .

2 . A/ Q : -

x = - 13 / 17

So ,

- ( - x ) = - ( - 13 / 17 )

As , We know , { - × - = + }

=> x = 13 / 17

i.e , - ( - x ) = x

3 . No , Rational numbers are not always closed under division because if We consider two rational numbers , for example 5 & 0 then ,

On division 5 / 0 , We get non - defined ; Which is not a rational Number . So division is not closed .