$\tan\left(270-x\right)=\cot$
$24=x$
$5x^2-47x+56=0$
$\frac{4-2x}{-3}>40$
$4v+7v$
$\frac{4}{x}+\frac{3}{x+6}$
$5\cdot\left(y^2+2y+4\right)$
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