$2x-3+x+2+x-x-5+1$
$-93\cdot31$
$x+\frac{1}{x}=2$
$-3a^{x-2}-r^{x-2}$
$-7\cdot\left(8-5\right)+24\left(-13+7\right)$
$\sqrt[6]{a^2}b^3$
$-234-57$
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