$16x-32$
$-8ay+5bx+7cz-11ay+3bx-7cz-4ay+3cz$
$\frac{s^{-1}t^6s^{-1}tst}{t^{-1}}$
$5x^2-2x+2$
$x^2=-16$
$8b+19-5b$
$\frac{2x+10}{x+3}\ge1$
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