$0mun$
$3x-4y=13$
$3\cos\left(2x\right)+2\sin^2\left(x\right)=2$
$\frac{11}{2x^2-7x-9}$
$-19-\left(-80\right)$
$x+y+z=3$
$3-2\:+\:5-2\:+\:2-2$
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