$\frac{3c}{c^2}+\frac{1}{c-2}=\frac{2}{c+2}$
$-3-\left[4+-2+\left(-7+13\right)-6\right]$
$7x+9=3+9x$
$\left(\:+\:5\:\right)\:+\:\left(\:+\:3\:\right)\:$
$-\frac{1}{2}e^{-\infty^2}$
$3x^{-8}y^2\cdot5x^3y^{-4}$
$\frac{b}{\sqrt{b}-b}$
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