Equation rearraging

1. Jan 22, 2009

peter_pan

SO here is the problem

I am wondering how to make J the subject ?

I have tried making J/2 and 4a/3 into a single fraction but so far nothing.I am doing something wrong somewhere.

Any suggestions ?

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2. Jan 22, 2009

Staff: Mentor

Here it is so I can see it better:
$$V = \frac{\frac{J}{2} + \frac{4a}{3}}{L}$$

Multiply both sides by L.
Subtract 4a/3 from both sides.
Multiply both sides by 2.