$x+a+x$
$\left(5x+3y\ge\:110\right)\:\:\left(3x+5y\ge\:150\right)\:$
$\left(+8\right)-\left(x\right)=-20$
$16x-8$
$\int\frac{z^2-3z-8}{z^2-2z+1}dz$
$\left(2x+6\right)\left(2x-6\right)$
$\left(2x\:+\:2\right)\:-\:\left(3x\:+\:11\right)$
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