$-4y=2x+5$
$\frac{n}{9}=-7$
$\left(\frac{a^5b^{-3}c^4}{a^{-5}c^{-2}}\right)^2$
$12x^2+4x^4+36$
$\frac{1}{5}x-\frac{1}{2}x=6$
$\int\left(8x+3\right)4dx$
$\left(n^2+2n+1\right)\left(n-2n-1\right)$
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