Question

R=6km
solve for m?
I do't understand these types of math problems

Answer 1

Simplifying r = 6km Solving r = 6km Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Simplifying r = 6km

Answer 2

To solve this equation, the goal is to isolate the variable m on one side of the equation.

To do this, divide both sides by 6k -- this will give you R over 6k on the left side and m on the right side.
R/6k = m

(I'm guessing this is what you meant; however, the equation looks like it could also mean "rate equals six kilometers [an hour]".)