Question

tell the ratiinal number of the form a/b is used to write equivalent fration 6/7 equal to 18/21​

Answer 1

ans 3

because, given that 6/7 = 18/21

now ,

6/7........ 1

18/21.......2

considering eq. 2

i.e., 18/21

on bringing it into lowest term we get 6/7 as 18 and 21 are multiples of 3.

therefore from eq.s 1 and 2

6/7=6/7

therefore 3 is the rational no.