$0=\cot\left(x\right)\sin\left(x\right)-\cos^2\left(x\right)\sec\left(x\right)$
$+607-751-512+618-239+516-604+916+658-730$
$\frac{dy}{dt}+8y=34e^{9t}$
$\frac{-25600}{-160}$
$-7+9c-13c+12$
$y-x=4$
$5\:-\:x\:=\:21\:$
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