$12^3a+36ab+54b-b^3$
$25w^2-60w+36$
$2z=-17.64$
$\frac{x^2}{64}-\frac{y^2z^4}{100}$
$x-4>-1$
$2\left(4r+10\right)+3r\:=\:152$
$120+x=-62$
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