Question

By what rational number should 21/43 be multiplied to obtain 12/23

Answer 1

here's Ur ans....
......HOPE IT'S HELPFUL TO U.........

Answer 2

suppose the number is x ...
then x into 21/43=12/23
so x= 12/23 divided by 21/43 so it will be 12*43/23*21... so answer is 516/483 or minimising it 172/161.