$\frac{4+2x}{2}=5$
$2x^2+8x-12$
$\log_{30}\left(c-1\right)+\log_{30}\left(c-8\right)=1$
$\frac{\left(x^2-\:2x\right)}{3}$
$\frac{3a^2b^2c^2-2abc+ab^2c}{abc}$
$sin\left(x\right)+sin\left(x\right)cos\left(x\right)+cos\left(x\right)=1$
$\log\left(\frac{1}{3}\right)x=3$
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