$\frac{1}{2}\left(2^3+22\right)-\frac{27}{3}$
$-5<x:2-3$
$\csc\:^2\left(\theta\:\right)-9csc\left(\theta\:\right)+20=0$
$-5-7+4+2$
$4x\frac{dy}{dx}+y=3xy^{-2}$
$x^2+35x-64$
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