$m-2+m+2m+m+\frac{5}{7}+m+\frac{5}{7}+2m-5$
$\left(+7\right)-\left(-5\right)$
$\int x^2sen\:bx\:dx$
$3^2.3^7$
$\cos\left(x\right)=-\frac{\sqrt{24}}{5}$
$3x\:+\:2\left(3x-4\right)=28$
$-24=-3\left(x+4\right)$
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