$5h-3h$
$12=-3+n$
$-5.-12,5-3.5+4.-1$
$\frac{69\pi\:-69\cdot\:\:0.57693}{2\pi}$
$y^2-\:3y\:-\:10\:=\:0$
$-2x-3\le-7$
$x^2+162x+27$
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