$\left(\frac{2x}{1\left(\left(x+2\right)-1\right)}\right)$
$\frac{\sin\left(x\right)\cos\left(y\right)+\sin\left(y\right)\cos\left(x\right)}{\cos\left(x\right)\cos\left(y\right)}$
$-39\:+1\:\left(-44\right)$
$\frac{16x}{5}-\frac{x-1}{11}$
$\lim_{x\to1}\:\ln\left(x^5-1\right)$
$x\left(4\:+\:y\right)\:-\:2x\left(y\:+\:7\right)$
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