$8\left(10+3m\right)+4m$
$3\cdot\left(2\:+\:\left(-4\right)\right)$
$cosx\:=\:\frac{4}{5}$
$-50-\left(-15\right)$
$log\left(x^2-9\right)-\log\left(x-3\right)=\log\left(3\right)+\log\left(2x\right)$
$\int_{tanx}^{\frac{1}{x}}\left(sen\:t^2\right)dt$
$2\left(15-6\right)+5\left(10+2\right)-2\left(4\right)$
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