$3x-7>2x-14$
$\frac{dy}{dx}=\frac{\left(5x^2+y^2\right)}{xy}$
$15ab+30a-45$
$\lim_{x\to1}\left(\frac{x^2-1}{\sqrt{x-1}}\right)$
$\left(\frac{7^6}{7^3}\right)^3$
$t^2-6t+9$
$11\left(8d-4\right)$
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