tentukan hasil dari (⅓)×-¹=27

jawab

(1/3)ˣ⁻¹ = 27 = (3)³
(3⁻¹)ˣ⁻¹ = (3)³

-1(x  - 1) = 3
-x + 1 = 3
- x = 2
x = - 2

(1/3)^x-1=27
(3^-1)^x-1=3^3
3^-x+1=3^3
-x+1=3
-x=2
X=-2

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