$7x+3=4x-9$
$\int\left(\frac{-3\ln\left(x\right)}{x}\right)dx$
$\frac{sec^2x+csc^2}{secxcscx}$
$\left(5m-13\right)\left(5m+13\right)$
$1\:+\:cos5x\:cosx\:+sen5xsenx$
$\frac{\cosb}{\sinb}\times\tanb-\cos^{2}b$
$+10-8+4-7-1+6$
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