Question

what should be subtracted from 5/7 to get 1/21?...?....?​

Answer 1

let x be a number

5/7-x=1/21

5/7-1/21=x

(5*3)/(7*3)-1/21=x

15/21-1/21=x

14/21=x

therefore, x=14/21=2/3

Answer 2

hope this helps u.........