Solution - Power equations

Step  1  :

 1.1     405 = 34•5

(405)¹ = (3⁴•5)¹ = 3⁴ • 5

Equation at the end of step  1  :

Step  2  :

            (34•5)
 Simplify   ——————
              3   

Dividing exponents :

 2.1    3⁴   divided by   3¹   = 3^{(4 - 1)} = 3³

Final result :

  135