Solution - Simplification or other simple results

Step  1  :

             1
 Simplify   ——
            20

Equation at the end of step  1  :

   13     7      1
  (—— -  ——) -  ——
   40    40     20

Step  2  :

             7
 Simplify   ——
            40

Equation at the end of step  2  :

   13     7      1
  (—— -  ——) -  ——
   40    40     20

Step  3  :

            13
 Simplify   ——
            40

Equation at the end of step  3  :

   13     7      1
  (—— -  ——) -  ——
   40    40     20

Step  4  :

Adding fractions which have a common denominator :

 4.1       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 - (7)      3
 ————————  =  ——
    40        20

Equation at the end of step  4  :

   3     1
  —— -  ——
  20    20

Step  5  :

Adding fractions which have a common denominator :

 5.1       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:

 3 - (1)      1
 ———————  =  ——
   20        10

Final result :

   1           
  —— = 0.10000 
  10