$x\:+\:11\:<\:3x$
$\left(a^{x+1}-b^{2+3}\right)$
$4n^2+4n-3$
$3x^2+12x-15=0$
$32\:+\:-\left(5\:+\:4\:-\:2\right)\:+\:\left[-\left(-\:7\:+\:2\right)\:-\:12\right]\:+\:3\:$
$cosx=\frac{7}{5}$
$\cos\left(x\right)+\frac{\sin\left(x\right)}{1+\cos\left(x\right)}=\csc\left(x\right)$
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