$-15=p-5$
$cscx-sinx=\frac{2-cosx^2}{sinx}$
$\frac{\left(\sin\left(x\right)-\sin\left(3x\right)\right)}{\left(\cos\left(x\right)-\cos\left(3x\right)\right)}$
$20+90+517c$
$xy^2-x+16=0$
$\left(-100\right)\cdot\left(-9\right)$
$x^2-6x=42$
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