$\left(-3\right)+\left(-5\right)-\left(-5\right)$
$\frac{15a^5b^2}{5a^2b}$
$14=\frac{7}{9}x$
$3\sec^{2}x+2\tan x-4=0$
$3+5-\left(4-69\right)-7$
$2-7<0$
$x^2+8x+8=3x+2$
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