Solution - Simplification or other simple results

Step  1  :

Equation at the end of step  1  :

  (22 -  10) -  6

Step  2  :

Pulling out like terms :

 2.1      Pull out     -6 

Note that  6 =(-1)• -6 
After pulling out, we are left with :
      -6 • ( (-1) +( (-1) ))

Final result :

  12