$30+\left|-40\right|$
$\sin\left(x\right)\cos\left(x\right)=\sin\left(2x\right)$
$-14x\cdot2$
$-\frac{2}{3}y-\frac{1}{6}y$
$5x\:and\:4xy$
$\left(2a-2b\right)\left(a-3b\right)$
$4.5\:x\:10$
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