$3x+2\left(x-1\right)=6x-9$
$6n-24$
$\frac{x^3+8}{x-2}$
$27^{x-3}=9^{x+9}$
$\left(3+3\sqrt{x+2}\right)^2$
$7^1-1^7$
$216m^6-125n^3$
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