$9x+3+2\left(x+2\right)<-6x$
$x^2+10+21$
$-13m\:+\:5n\:-\:8p\:-\:7p\:-\:8m\:+\:3n\:$
$5x-8<107$
$.5m+.25=\frac{1}{2}$
$\left|-9\right|-8$
$\sqrt{2}\sin^2x+\sin x=0$
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