Solution - Adding, subtracting and finding the least common multiple

Step  1  :

            2
 Simplify   —
            3

Equation at the end of step  1  :

  5    5    1   2
  —-((——•(3-—))•—)
  8   12    4   3

Step  2  :

            1
 Simplify   —
            4

Equation at the end of step  2  :

  5    5    1   2
  —-((——•(3-—))•—)
  8   12    4   3

Step  3  :

Rewriting the whole as an Equivalent Fraction :

 3.1   Subtracting a fraction from a whole

Rewrite the whole as a fraction using  4  as the denominator :

          3     3 • 4
     3 =  —  =  —————
          1       4  

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:

 3 • 4 - (1)     11
 ———————————  =  ——
      4          4 

Equation at the end of step  3  :

  5       5   11    2
  — -  ((—— • ——) • —)
  8      12   4     3

Step  4  :

             5
 Simplify   ——
            12

Equation at the end of step  4  :

  5       5   11    2
  — -  ((—— • ——) • —)
  8      12   4     3

Step  5  :

            5
 Simplify   —
            8

Equation at the end of step  5  :

  5    55
  — -  ——
  8    72

Step  6  :

Calculating the Least Common Multiple :

 6.1    Find the Least Common Multiple

      The left denominator is :       8 

      The right denominator is :       72 

      Least Common Multiple:
      72 

Calculating Multipliers :

 6.2    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 = 9

   Right_M = L.C.M / R_Deno = 1

Making Equivalent Fractions :

 6.3      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.      5 • 9
   ——————————————————  =   —————
         L.C.M              72  

   R. Mult. • R. Num.      55
   ——————————————————  =   ——
         L.C.M             72

Adding fractions that have a common denominator :

 6.4       Adding up the two equivalent fractions

 5 • 9 - (55)     -5
 ————————————  =  ——
      72          36

Final result :

  -5            
  —— = -0.13889 
  36