$a+b-c+a+b-c+2a+b+c$
$4s+5s$
$2x+y=14$
$\cot\left(x\right)\cos\left(x\right)+\sin\left(x\right)=0$
$\left(-225\right):\left(-15\right):\left(-3\right)$
$\left(-10\right)x\left(010\right)$
$\left(3x^2\:+\:2x\right)^2$
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