$\:\left(-7\right)\left(-84\right)\:$
$csc^{\left(2\right)}\:x-cot\:x=1$
$-718-456$
$-71\:-\:\left(-87\right)$
$x+-8=-3$
$\lim_{x\to0}\left(\frac{x-e^x}{1-e^x}\right)$
$9\cdot17$
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