$-35\:+\:39\:+\:-18\:+\:-89\:$
$x+1=4x+1$
$m+7\ge12$
$-x-6=-13$
$\lim_{x\to0}\left(\frac{x^3+3x^2}{x^2}\right)$
$36+-1+4$
$-y+57=x^2-14x$
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