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$4.$ Nilai $x$ yang memenuhi $Persamaan:$ $\dfrac {4} {5}\left(2^{3x-2}\right)+\dfrac {8^{x}} {20}=1$ adalah. . .. $A.$ $-\dfrac {3} {2}$ D. $\dfrac {2} {3}$ B. $-\dfrac {2} {3}$ E. $\dfrac {3} {2}$ C. $1$
10th-13th grade
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Qanda teacher - Neelima
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Answer is option (D)
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thank you!