Solution - Simplification or other simple results

Reformatting the input :

Changes made to your input should not affect the solution:

 (1): "r1"   was replaced by   "r^1". 

Step  1  :

            47
 Simplify   ——
            12

Equation at the end of step  1  :

   47
  (—— • r17102) • t
   12

Step  2  :

Equation at the end of step  2  :

  47r17102 
  ———————— • t
     12   

Step  3  :

Final result :

  47r17102t 
  —————————
     12