Solution - Simplification or other simple results

Step  1  :

            7
 Simplify   —
            1

Equation at the end of step  1  :

  (3 • (32)) -  (7 • 3)

Step  2  :

Equation at the end of step  2  :

  (3 • 32) -  21

Step  3  :

Multiplying exponents :

 3.1    3¹  multiplied by  3²   = 3^{(1 + 2)} = 3³

Equation at the end of step  3  :

  33 -  21

Step  4  :

Final result :

  6