$x\left(x^2\right)\left(x^4\right)$
$\left(-2y+3nm\right)\left(2xy+3y\right)$
$14=a-9$
$\left(-\frac{1}{2}\right)^{-3}+\left(-\frac{1}{7}\right)^{-2}+\left(-3\right)^2$
$6\:-\:3h\:+\:2h\:-\:9$
$-2x=32$
$4x\:+\:5y=\:52$
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