$5\sqrt[4]{81}+7\sqrt{100}-9\sqrt[3]{1000}$
$45\cdot99$
$2a^2-11a+12$
$2\cdot3x$
$-4x^2+19x-21=7x^2+34x-33$
$7mn\frac{3x}{7}-1$
$22x-\frac{3}{5}=96x$
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