Question 939369
let x be the number
9 is added to that number 
  it becomes  9+x
on dividing the sum by 16, it becomes finally 1
  {{{(9+x)/16= 1}}}
     multiply with 16 on both sides
   {{{ ((9+x)/16)*16  = 1*16}}}
         9+x= 16
           subtract 9 on both sides
   9+x-9 = 16-9
      x = 7
Result : number we are looking for is 7