Is my equation rearrangement correct?

[Bugsy23]

Hi, my algebra skills are a bit rusty so can someone tell me if I've rearranged this equation correctly. This is the original
M=rv²/G

I need to make r the subject so I put
r=GM/v²

Ist that right? Looks a bit off to me. Thanks

 

[Borek]

It is OK.

Do you remember how to rearrange? In short - you can do the same operations on both sides of the equal side. So you can multiply both sides by G, and you can divide both sides by v² (assuming v² is not zero) - check what cancels out.