$-2,z=1$
$-15+8-\left(5\right)+1-5-\left(-2\right)+\left(-2\right)$
$x+5<5x-7$
$\lim_{x\to\infty}ln\left(1+\frac{1}{10x}\right)^x$
$3x+4=22$
$-4ab^{-3}$
$6a^2+8a+2$
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