Solution - Simplification or other simple results

Step  1  :

Equation at the end of step  1  :

                 12
  10 +  ((10 -  (—— • 3)) • 7)
                 22

Step  2  :

            12
 Simplify   ——
            22

Canceling Out :

 2.1      Canceling out  2² as it appears on both sides of the fraction line

Equation at the end of step  2  :

  10 +  ((10 -  (3 • 3)) • 7)

Step  3  :

Final result :

  17