Question

Which of the following pairs represent the same rational number?

-7/21 and 3/9​

Answer 1

Answer:

Step-by-step explanation:

i)  

21

−7

​  

=  

3

−1

​  

 

9

3

​  

=  

3

1

​  

 

So they are not equal  

ii)  

20

−16

​  

=  

−25

20

​  

 

5

−4

​  

=  

5

−4

​  

 

So they are equal  

iii)  

−3

−2

​  

=  

3

2

​  

 

3

2

​  

=  

3

2

​  

 

So they are equal  

iv)  

5

−3

​  

=  

5

−3

​  

 

20

−15

​  

=  

5

−3

​  

 

So they are equal  

v)  

−5

8

​  

=  

5

−8

​  

 

15

−24

​  

=  

5

−8

​  

 

So they are  equal

vi)  

3

1

​  

=  

3

1

​  

 

9

−1

​  

 

So they are not equal