Question 906147
 (61/100)- 1 17/50
   1 17/50 is mixed fraction. we have to convert this mixed fraction into a simple fraction 
               1 17/50   = ( 50*1 +17)/50
                         = 67/50
hence  (61/100)- 1 17/50  = 61/100 -67/50
    *[invoke explain_simplification "(61/100) -(67/50)" ]