Question

The product of two rational numbers is 47/42 and one of them is -11/21, find the other number​

Answer 1

-
`(47)/(22)`

Explanation:

let n be the other number , then

-
`(11)/(21)` × n =
`(47)/(42)` ( divide both sides by -
`(11)/(21)` )

n =
`((47)/(42) )/(-(11)/(21) )`

=
`(47)/(42)` × -
`(21)/(11)` ( cancel 21 and 42 )

=
`(47)/(2)` × -
`(1)/(11)`

= -
`(47)/(22)`

Answer 2

another number is -47/22

explanation:

let one number be x and the other be y

-11/21 × y = 47/42

y = -47/22