Solution - Simplification or other simple results

Step  1  :

            4
 Simplify   —
            7

Equation at the end of step  1  :

  4
  —) ÷ 2 ÷ 3
  7

Step  2  :

         -4      
 Divide  ——  by  2
         7       

Equation at the end of step  2  :

  -2
  —— ÷ 3
  7 

Step  3  :

         -2      
 Divide  ——  by  3
         7       

Final result :

  -2            
  —— = -0.09524 
  21