Solution - Adding, subtracting and finding the least common multiple

Step  1  :

            3
 Simplify   —
            5

Equation at the end of step  1  :

  7      1     3
  —-((0-——)•(0-—))
  8     10     5

Step  2  :

             1
 Simplify   ——
            10

Equation at the end of step  2  :

  7            1    -3
  — -  ((0 -  ——) • ——)
  8           10    5 

Step  3  :

            7
 Simplify   —
            8

Equation at the end of step  3  :

  7     3
  — -  ——
  8    50

Step  4  :

Calculating the Least Common Multiple :

 4.1    Find the Least Common Multiple

      The left denominator is :       8 

      The right denominator is :       50 

      Least Common Multiple:
      200 

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 = 25

   Right_M = L.C.M / R_Deno = 4

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.      7 • 25
   ——————————————————  =   ——————
         L.C.M              200  

   R. Mult. • R. Num.      3 • 4
   ——————————————————  =   —————
         L.C.M              200 

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:

 7 • 25 - (3 • 4)     163
 ————————————————  =  ———
       200            200

Final result :

  163           
  ——— = 0.81500 
  200