Respuesta :

3.5 / 9

(35 / 10) /9

35 / 10 ÷ 9

35 / 10 × 1/9

35 / 90           

             5 into 35 is 7, and 5 into 90 is 18

7 / 18 

So it is  35 / 90  or 7 / 18.