Solution - Adding, subtracting and finding the least common multiple

Reformatting the input :

Changes made to your input should not affect the solution:

(1): "0.9" was replaced by "(9/10)". 2 more similar replacement(s)

Step  1  :

             9
 Simplify   ——
            10

Equation at the end of step  1  :

   31           9
  (—— -  2) -  ——
   10          10

Step  2  :

            31
 Simplify   ——
            10

Equation at the end of step  2  :

   31           9
  (—— -  2) -  ——
   10          10

Step  3  :

Rewriting the whole as an Equivalent Fraction :

 3.1   Subtracting a whole from a fraction

Rewrite the whole as a fraction using  10  as the denominator :

         2     2 • 10
    2 =  —  =  ——————
         1       10  

Equivalent fraction : The fraction thus generated looks different but has the same value as the whole

Common denominator : The equivalent fraction and the other fraction involved in the calculation share the same denominator

Adding fractions that have a common denominator :

 3.2       Adding up the two equivalent fractions
Add the two equivalent fractions which now have a common denominator

Combine the numerators together, put the sum or difference over the common denominator then reduce to lowest terms if possible:

 31 - (2 • 10)     11
 —————————————  =  ——
      10           10

Equation at the end of step  3  :

  11     9
  —— -  ——
  10    10

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:

 11 - (9)     1
 ————————  =  —
    10        5

Final result :

  1           
  — = 0.20000 
  5