$3a+7=4b-3$
$\lim_{x\to0}\left(cos\left(x\right)^{cos\left(x\right)}\right)$
$6+\left(-x\right)+2x+\left(-7\right)+2x$
$3\left(2n+4m\right)$
$x-2-6+3x$
$\left(x^2\right)^{\frac{1}{3}}$
$3^2+8x^3\cdot3$
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