Math Help - rearranging equation

hi how do I rearrange this equation to give me the value of J

G= pi x D^2/ 4JL

Thanks

Originally Posted by scarface1

hi how do I rearrange this equation to give me the value of J

G= pi x D^2/ 4JL

Thanks

Now multily both sides by and try to solv it for J

i dont quite understand which two sides im supposed to multiply :S
could you possibly explain this step by step please

Thank you so much

If i'm reading the question correctly, it's

So;

You would cross multiply and solve for