$\frac{x-2}{x}=\frac{3x}{2}$
$h+5h$
$\sqrt{x^2y}$
$cos^2\left(x\right)=cos\left(2x\right)$
$\left|-8\right|-\left|-27\right|-\left|+18\right|$
$5z-4z$
$2500x+754y=900$
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