Solution - Power equations

Step  1  :

Equation at the end of step  1  :

Step  2  :

Equation at the end of step  2  :

Step  3  :

            75
 Simplify   ——
            73

Dividing exponents :

 3.1    7⁵   divided by   7³   = 7^{(5 - 3)} = 7²

Final result :

  49