$7x=21$
$\sqrt{10^{2\:}}-6^2$
$20x-60x+45x^2$
$3x>2$
$2x^3.\:-5x^4$
$\frac{5.6}{\cos\left(35.43\right)}$
$\int-\frac{\left(\sqrt{9.1^2-y^2}\right)}{y}dy$
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