Respuesta :

Well first you have to know if the 7 is repeating, or if the 4 is repeating or if both are repeating, then you have to think, well actually since they are rational number you cannot do it, you have to get the exact number first.
AL2006

If the '47' is repeating, and the decimal is  0.474747... ,
then it's equivalent to
                                        47 / 99 .

If it's just the '7' that repeats, and the decimal is  0.477777... ,
then it's equivalent to
                                         43 / 90 .