Solution - Simplification or other simple results

Step  1  :

            7
 Simplify   —
            4

Equation at the end of step  1  :

  6   7
  — • —
  5   4

Step  2  :

            6
 Simplify   —
            5

Equation at the end of step  2  :

  6   7
  — • —
  5   4

Step  3  :

Final result :

  21           
  —— = 2.10000 
  10