$-x+\:5\:<=-6x\:-\:7$
$\lim_{n\to0}\left(\frac{n}{4^n}\right)^{\frac{1}{n}}$
$e^{2x}-11e+30=0$
$y'=y+8$
$\frac{x+1}{x}=\frac{x-1}{2x-4}$
$\left(6a+b-c\right)^2$
$\lim_{x\to\infty}\left(\frac{\cos\left(x\right)-1}{2x^3\csc\left(x\right)}\right)$
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