$-4x+5x+2$
$3x-\frac{y}{2}$
$\lim_{x\to0}\left(\frac{\sin\left(x\right)}{x^2+x^3}\right)$
$5+8x<3x+30$
$2\:-\:\left(1\:-\:9\right)$
$32^2$
$9+15-\left(6+15+12\right)+12-\left[8+9-3\left(9+6-15\right)+9\right]$
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