\displaystyle [br]\begin{equation*}\frac{3x^4}{4} = 6\end{equation*}
\displaystyle [br]\begin{equation*}x^4 = 6 \times \frac{4}{3} = 8\end{equation*}
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\displaystyle [br]\begin{equation*}\frac{3x^4}{4} = 6\end{equation*}
\displaystyle [br]\begin{equation*}x^4 = 6 \times \frac{4}{3} = 8\end{equation*}
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