$3x^4+e^{4xy}=49$
$- 3.28 + 3$
$3\frac{1}{2}\cdot64$
$5\left(4x^2\right)^3$
$\frac{x-3}{2}+4<\frac{x+9}{3}$
$3a^59$
$20x-7=5+14x$
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