$\frac{dy}{dx}=\frac{y}{x}+\left(\frac{y}{x}\right)^{-2}+1$
$\left(\frac{5x^3}{y^2}\right)^3$
$3x+2<1-6x$
$2n-m-n-\frac{2}{5}m+\frac{3}{4}n-3m$
$\left(-2x-1\right)\left(x+4\right)$
$\frac{15x-85}{46}-\frac{10x-21<\:8}{23}$
$cosx\:+\:\frac{1}{2}=0$
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