Solution - Simplification or other simple results

Step  1  :

             7
 Simplify   ——
            13

Equation at the end of step  1  :

   9     7
  —— -  ——
  13    13

Step  2  :

             9
 Simplify   ——
            13

Equation at the end of step  2  :

   9     7
  —— -  ——
  13    13

Step  3  :

Adding fractions which have a common denominator :

 3.1       Adding fractions which have a common denominator
Combine the numerators together, put the sum or difference over the common denominator then reduce to lowest terms if possible:

 9 - (7)      2
 ———————  =  ——
   13        13

Final result :

   2           
  —— = 0.15385 
  13