$\:x\left(b\:+\:7\right)\:+\:y\left(b\:+\:7\right)$
$\frac{-4}{x-4}=1-\frac{3}{x+10}$
$\int\frac{2}{x\sqrt{4x-x^2}}dx$
$12x^2-9x=0$
$8y-3b-2y-4b$
$\left(22\cdot\left(-8\right)\right)+\left(24\right)$
$ax+3x$
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