Can someone point me in the right direction on how to solve this problem?

$\displaystyle 2sinx - sin2x = \frac{4}{\pi}$

I need to solve for x. I'm honestly not even sure where to begin. I could use double angle identities to turn sin2x into 2sinxcosx, which would then let me turn it into

$\displaystyle 2sinx(1-cosx) = \frac{4}{\pi}$

But I'm not sure how (or if) that would actually help me. Thanks in advance.