$\frac{x+2}{x+4}=\frac{x-2}{x+2}$
$2+9+6+3+5+y+7$
$3x^2+5x+10>0$
$ax+ay$
$13.1-95.9$
$\lim_{x\to\infty}\left(-48\right)$
$\lim_{x,y\to1,0}\left(\frac{xy-y}{\left(x-1\right)^2+y^2}\right)$
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