Question

the product of two rational number is 3 by 7 if one of the number is 5 by 21 find the other​

Answer 1

Answer:

5/21 × x = 3/7

x =3/7 × 21/5

x = 9/5

Answer 2

let the number be 'x'

ATQ,

5/21*x =3/7

5x/21=3/7

( by cross multiplication )

5x*7=21*3

35x=63

x=63/35

( by cancellation)

x=9/5

ANSWER:- THE NUMBER IS 9/5