$\frac{dy}{dx}+0.196y=9.8$
$\frac{\cot\:^2\left(a\right)+1}{\csc\left(a\right)-1}=\csc\left(a\right)+1$
$\frac{x}{4}=7$
$\frac{1}{5}\log_mw+6\log_mz-\log_mx$
$x^2+10x=11$
$\frac{r^8}{r^3}$
$15n-22n$
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