Solution - Simplification or other simple results

Step  1  :

 1.1     4 = 22

(4)¹ = (2²)¹ = 2²

Equation at the end of step  1  :

        (21)     22
  (0 -  ————) -  ——
         2       4 

Step  2  :

            22
 Simplify   ——
            4 

Canceling Out :

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

Equation at the end of step  2  :

        (21)     
  (0 -  ————) -  1
         2       

Step  3  :

Equation at the end of step  3  :

        2     
  (0 -  —) -  1
        2     

Step  4  :

            2
 Simplify   —
            2

Canceling Out :

 4.1      Canceling out  2  as it appears on both sides of the fraction line

Equation at the end of step  4  :

  (0 -  1) -  1

Step  5  :

Final result :

  -2