Solution - Simplification or other simple results

Step  1  :

             3
 Simplify   ——
            20

Equation at the end of step  1  :

   9     3
  —— -  ——
  20    20

Step  2  :

             9
 Simplify   ——
            20

Equation at the end of step  2  :

   9     3
  —— -  ——
  20    20

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 - (3)      3
 ———————  =  ——
   20        10

Final result :

   3           
  —— = 0.30000 
  10