$\frac{dy}{dx}=\:3+7y$
$2\left(n+2\right)=4n+1-2n$
$\frac{d}{dx}\csc\pi x$
$6m\:+\:14\:+\:3\left(3m\:+\:7\right)$
$\lim_{x\to0}\frac{4x+3}{3x+1}-3$
$a+b+b-a$
$41+29+7a-46+7a$
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