Solution - Adding, subtracting and finding the least common multiple

Reformatting the input :

Changes made to your input should not affect the solution:

(1): "4.2" was replaced by "(42/10)". 3 more similar replacement(s)

Step  1  :

            21
 Simplify   ——
            5 

Equation at the end of step  1  :

   154    14     21
  (——— -  ——) -  ——
   10     10     5 

Step  2  :

            7
 Simplify   —
            5

Equation at the end of step  2  :

   154    7     21
  (——— -  —) -  ——
   10     5     5 

Step  3  :

            77
 Simplify   ——
            5 

Equation at the end of step  3  :

   77    7     21
  (—— -  —) -  ——
   5     5     5 

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:

 77 - (7)     14
 ————————  =  ——
    5         1 

Equation at the end of step  4  :

  14    21
  —— -  ——
  1     5 

Step  5  :

Rewriting the whole as an Equivalent Fraction :

 5.1   Subtracting a fraction from a whole

Rewrite the whole as a fraction using  5  as the denominator :

           14     14 • 5
     14 =  ——  =  ——————
           1        5   

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 :

 5.2       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:

 14 • 5 - (21)     49
 —————————————  =  ——
       5           5 

Final result :

  49           
  —— = 9.80000 
  5