$x+11=-23$
$4-6\cdot2$
$\frac{48-40}{3x^2+2x+3}$
$\frac{x^2-2x+5}{x^2}$
$\lim_{x\to\infty}\left(2+\frac{3}{1+\left(x+1\right)^2}\right)$
$9a-12a-32$
$m-2+m+2m+m+\frac{5}{7}+2m-5$
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