$3.9+7+6-5.3\arccsc$
$-2-\left(-3\right)+1$
$-2x+6>-\frac{5}{7}x-3$
$-5ab-7ab+2.5$
$\frac{2^{-3}.4^2.2^5}{2^{-5}.2^5}$
$2x+8>0$
$9 ( 5 v - 3 ) + 4 ( 2 v + 5 )$
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