$-20\:-\:\left(13\:-\:16\right)\:-\:\left(-1\:+\:4\right)$
$\left(2d+3\right)\left(3d+44\right)$
$y^6\cdot2^{10}$
$x+2\le-\frac{2}{3}+2x$
$-5\left(-5+w\right)$
$x^2+x-x^2+2x-1$
$x-10=-11$
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