Solution - Simplification or other simple results

Reformatting the input :

Changes made to your input should not affect the solution:

 (1): "m1"   was replaced by   "m^1". 

Step  1  :

Equation at the end of step  1  :

  3m12 • m

Step  2  :

Multiplying exponential expressions :

 2.1    m¹² multiplied by m¹ = m^{(12 + 1)} = m¹³

Final result :

  3m13