Solution - Simplification or other simple results

Step  1  :

Equation at the end of step  1  :

         28
  17 -  (—— • 52)
         4 

Step  2  :

            7
 Simplify   —
            1

Equation at the end of step  2  :

  17 -  (7 • 52)

Step  3  :

Equation at the end of step  3  :

  17 -  (7•52)

Step  4  :

Final result :

  -158