$-180>-10-10m$
$\left(-29\right)-\left(-42\right)$
$\ln\left(x^2-1\right)-\ln\left(x-1\right)=\ln\left(4\right)$
$4x+4<9x+8$
$\sec\left(sec^{-1}\right)$
$-3244-4567-20$
$1\cdot5-2$
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