Solution - Simplification or other simple results

Step  1  :

             3
 Simplify   ——
            10

Equation at the end of step  1  :

  5          3
  — • (0 -  ——)
  6         10

Step  2  :

            5
 Simplify   —
            6

Equation at the end of step  2  :

  5   -3
  — • ——
  6   10

Step  3  :

Final result :

  -1            
  —— = -0.25000 
  4