Solution - Adding, subtracting and finding the least common multiple

Reformatting the input :

Changes made to your input should not affect the solution:

(1): "9.9" was replaced by "(99/10)". 3 more similar replacement(s)

Step  1  :

            99
 Simplify   ——
            10

Equation at the end of step  1  :

   42    101     99
  (—— +  ———) +  ——
   10    10      10

Step  2  :

            101
 Simplify   ———
            10 

Equation at the end of step  2  :

   42    101     99
  (—— +  ———) +  ——
   10    10      10

Step  3  :

            21
 Simplify   ——
            5 

Equation at the end of step  3  :

   21    101     99
  (—— +  ———) +  ——
   5     10      10

Step  4  :

Calculating the Least Common Multiple :

 4.1    Find the Least Common Multiple

      The left denominator is :       5 

      The right denominator is :       10 

      Least Common Multiple:
      10 

Calculating Multipliers :

 4.2    Calculate multipliers for the two fractions


    Denote the Least Common Multiple by  L.C.M 
    Denote the Left Multiplier by  Left_M 
    Denote the Right Multiplier by  Right_M 
    Denote the Left Deniminator by  L_Deno 
    Denote the Right Multiplier by  R_Deno 

   Left_M = L.C.M / L_Deno = 2

   Right_M = L.C.M / R_Deno = 1

Making Equivalent Fractions :

 4.3      Rewrite the two fractions into equivalent fractions

Two fractions are called equivalent if they have the same numeric value.

For example :  1/2   and  2/4  are equivalent,  y/(y+1)²   and  (y²+y)/(y+1)³  are equivalent as well.

To calculate equivalent fraction , multiply the Numerator of each fraction, by its respective Multiplier.

   L. Mult. • L. Num.      21 • 2
   ——————————————————  =   ——————
         L.C.M               10  

   R. Mult. • R. Num.      101
   ——————————————————  =   ———
         L.C.M             10 

Adding fractions that have a common denominator :

 4.4       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:

 21 • 2 + 101     143
 ————————————  =  ———
      10          10 

Equation at the end of step  4  :

  143    99
  ——— +  ——
  10     10

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:

 143 + 99     121
 ————————  =  ———
    10         5 

Final result :

  121            
  ——— = 24.20000 
   5