Solution - Simplification or other simple results

Reformatting the input :

Changes made to your input should not affect the solution:

(1): "0.0000042" was replaced by "(0000042/10000000)". 2 more similar replacement(s)

Step  1  :

               21  
 Simplify   ———————
            5000000

Equation at the end of step  1  :

     18          21  
  ———————— -  ———————
  10000000    5000000

Step  2  :

               9   
 Simplify   ———————
            5000000

Equation at the end of step  2  :

     9          21  
  ——————— -  ———————
  5000000    5000000

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 - (21)        -3  
 ————————  =  ———————
 5000000      1250000

Final result :

     -3              
  ——————— = -0.00000 
  1250000