Question

what must be subtracted from 15/7 to get 17/21

Answer 1

62/21

Step-by-step explanation:

let the no.=x. x-15/7=17/21,x=17/21+15/7=62/21

Answer 2

Step-by-step explanation:

let the number be -'x'

15/7 - x =17/21

15/7-17/21=x

45-17/21=x

28/21=x

3/4=x

The number is 4/3