Solution - Simplification or other simple results

Reformatting the input :

Changes made to your input should not affect the solution:

(1): "^-4" was replaced by "^(-4)".

Step  1  :

Equation at the end of step  1  :

  (3-4) • 112

Step  2  :

Equation at the end of step  2  :

  (3)(-4) • 112

Step  3  :

Final result :

  121           
  ——— = 1.49383 
  81