Solution - Simplification or other simple results

Step  1  :

             3
 Simplify   ——
            20

Equation at the end of step  1  :

  13     3
  —— -  ——
  20    20

Step  2  :

            13
 Simplify   ——
            20

Equation at the end of step  2  :

  13     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:

 13 - (3)     1
 ————————  =  —
    20        2

Final result :

  1           
  — = 0.50000 
  2