Solution - Simplification or other simple results

Step  1  :

            9
 Simplify   —
            1

Equation at the end of step  1  :

  9 -  9

Step  2  :

Pulling out like terms :

 2.1      Pull out     9 

After pulling out, we are left with :
      9 • ( 1 +( (-1) ))

Final result :

  0