Solution - Reducing fractions to their lowest terms

Step  1  :

            7
 Simplify   —
            8

Equation at the end of step  1  :

             7
  15 -  (3 • —)
             8

Step  2  :

Rewriting the whole as an Equivalent Fraction :

 2.1   Subtracting a fraction from a whole

Rewrite the whole as a fraction using  8  as the denominator :

           15     15 • 8
     15 =  ——  =  ——————
           1        8   

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 :

 2.2       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:

 15 • 8 - (21)     99
 —————————————  =  ——
       8           8 

Final result :

  99            
  —— = 12.37500 
  8