Respuesta :

sreedevi102

Answer:

[tex]3k (m + \frac{1}{3}n)[/tex]

Step-by-step explanation:

Sum of m and one - third of n is :

                                     [tex]= m + \frac{1}{3}n[/tex]

Product of 3k to  the sum is :

                                     [tex]=3k \times (m + \frac{1}{3}n)[/tex]