$1=\frac{1+\cos\left(x\right)+\sin\left(x\right)}{1+\cos\left(x\right)-\sin\left(x\right)}$
$\left(\frac{-8a^2b^3c}{-2ab^2c}\right)$
$767+77$
$5n-8=37$
$\frac{dy}{dx}\left(xy+\frac{x}{y}+3y=0\right)$
$8\left(f+g\right)+w\left(f+g\right)$
$\left(y-x\right)y'=1$
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