Answer:
r =
![(6N)/(m)](https://img.qammunity.org/2019/formulas/mathematics/college/anz1t8qan3ccnelh2y1wdoqir0gax3myno.png)
Explanation:
Given an equation in terms of N on the left side and r, m variables on the right side.
Instead of N on left side we have to bring r on left side alone and other terms on right side to get formula for r.
For this multiply the given equation first by 6.
6N = rm
Now divide by m
r =
![(6N)/(m)](https://img.qammunity.org/2019/formulas/mathematics/college/anz1t8qan3ccnelh2y1wdoqir0gax3myno.png)
This is the formula for r in terms of N, m.