Solution - Simplification or other simple results

Step  1  :

             x
 Simplify   ——
            26

Equation at the end of step  1  :

         x
  (18 • ——) • x
        26

Step  2  :

Multiplying exponential expressions :

 2.1    x¹ multiplied by x¹ = x^{(1 + 1)} = x²

Final result :

  9x2
  ———
  13