$12.00+17.50$
$\frac{cos\left(2x\right)}{cos\left(x\right)-sin\left(x\right)}$
$\frac{7}{6}x-3.2<\frac{9}{2}x$
$6x^2-19x-7$
$8w\:-\:8wx\:+\:7\:+\:7wx\:-\:5x$
$2y^3-7x^2=5$
$3x+4=4x-7$
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