$\left(\left(\frac{45.02171}{18.17}\right)-1\right)\cdot100$
$3+10-12+3-12+4+1+13$
$\left(+23\right)\cdot\left(+51\right)$
$-5x+7>-10x-8$
$\left(\frac{1}{\sin^2\left(y\right)}\right)-4$
$\frac{dy}{dx}=\frac{y+1}{x\left(y-1\right)}$
$\frac{4v^2-4v}{1+v}$
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