$4z+3z+9z$
$12x^2y-6xy^2+24x^3-18xy^3$
$16w^2-40w+25$
$3x-1>7-x$
$\left(-12v+7z\right)^2$
$\frac{2}{5}\left(12+y\right)=6-\frac{1}{4}\left(9-y\right)$
$8xy+52x-25y-176=55$
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