$\int_3^{\infty}\left(\frac{14}{xlnx}\right)dx$
$5x\:+\:7\:<\:2x\:+19$
$\lim_{x\to0}\frac{cos\:\left(x\right)-e^x}{x^2+x}$
$\cos^2\left(a\right)=\sin\left(a\right)+1$
$y-7=x^2+9x+\frac{81}{4}$
$\pi\int_{-\infty}^4\left(\frac{1}{4-x}\right)dx$
$3x+12=x-4$
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