$1-x<7$
$17\:-\:11y\:+\:4y\:$
$\frac{\sin\left(x\right)}{cos\left(x\right)}-\frac{csc\left(x\right)}{cos\left(x\right)}$
$2417-999$
$\frac{2a\cdot9}{4^2a^{16}}$
$5-\frac{2x}{2}=10$
$-4x^{2}-7x-4$
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