Solution - Power equations

Step  1  :

 1.1     63 = 32•7

(63)¹ = (3²•7)¹ = 3² • 7

Equation at the end of step  1  :

       (32•7)
  0 -  ——————
         3   

Step  2  :

            (32•7)
 Simplify   ——————
              3   

Dividing exponents :

 2.1    3²   divided by   3¹   = 3^{(2 - 1)} = 3¹ = 3

Equation at the end of step  2  :

  0 -  21

Step  3  :

Final result :

  -21