Answer:
Therefore, 
 .
Explanation:
Given : If k= am + 3mx.
To find: The value of m in terms of a, k, and x can be expressed as.
Solution: We have given that If k= am + 3mx.
 We need to find m 
Taking common m from am + 3mx ,
k= m ( a+ 3x)
On dividing both side by ( a+ 3x) and switching the sides
 
 
 Therefore, 
 .