Solution - Simplification or other simple results

Step  1  :

            6
 Simplify   —
            7

Equation at the end of step  1  :

         5              6
  0 -  ((— • x) • (0 -  —))
         6              7

Step  2  :

            5
 Simplify   —
            6

Equation at the end of step  2  :

         5        -6
  0 -  ((— • x) • ——)
         6        7 

Step  3  :

Final result :

  5x
  ——
  7