Question

The second one please

Answer 1

x = 27

Explanation:

let the donominatir be x

28/63 = 12/x

28x = 756

x = 756/28

x = 27

-TheUnknownScientist

Answer 2

I think it's 27 but I may be wrong.

yeah 27 because you do the butterfly method. you multiply 63 and 12 you get 756 then you divide 756 by 28 and you get 27