$-\left(-48+32\right)-\left(67-82\right)$
$9g^2+30g+25$
$4x-8y+6x^2+3x-5y$
$\frac{4}{7}x+\frac{5}{14}x=39$
$\frac{2}{5}x-x+2x-x$
$\frac{6x-4}{x}$
$-q-7-5r$
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