Solution - Adding, subtracting and finding the least common multiple

Reformatting the input :

Changes made to your input should not affect the solution:

(1): "1.512" was replaced by "(1512/1000)". 2 more similar replacement(s)

Step  1  :

            189
 Simplify   ———
            125

Equation at the end of step  1  :

        42     189
  (7 -  ——) -  ———
        10     125

Step  2  :

            21
 Simplify   ——
            5 

Equation at the end of step  2  :

        21     189
  (7 -  ——) -  ———
        5      125

Step  3  :

Rewriting the whole as an Equivalent Fraction :

 3.1   Subtracting a fraction from a whole

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

          7     7 • 5
     7 =  —  =  —————
          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 :

 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:

 7 • 5 - (21)     14
 ————————————  =  ——
      5           5 

Equation at the end of step  3  :

  14    189
  —— -  ———
  5     125

Step  4  :

Calculating the Least Common Multiple :

 4.1    Find the Least Common Multiple

      The left denominator is :       5 

      The right denominator is :       125 

      Least Common Multiple:
      125 

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 = 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.      14 • 25
   ——————————————————  =   ———————
         L.C.M               125  

   R. Mult. • R. Num.      189
   ——————————————————  =   ———
         L.C.M             125

Adding fractions that have a common denominator :

 4.4       Adding up the two equivalent fractions

 14 • 25 - (189)     161
 ———————————————  =  ———
       125           125

Final result :

  161           
  ——— = 1.28800 
  125