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maka jawabannya seperti ini
9³ˣ⁻¹=∛9
(3²)³ˣ⁻¹=∛(3)²
3⁶ˣ⁻²= 3 ²/³
jadi 6x - 2 = 2/3
6x = 2/3 + 2
6x = 8/3
x = 8/18
x = 4/9
OK