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Popular >

27^{-x-1}=81

Solution

2 7^{- x - 1} = 81

Solution

x = - \frac{7}{3}

+1

Solution steps

2 7^{- x - 1} = 81

Apply exponent rules

3 (- x - 1) = 4

Solve

3 (- x - 1) = 4 : x = - \frac{7}{3}

x = - \frac{7}{3}

Popular Examples

e^{- \frac{1}{2} x^{2}} = 0

8 1^{x} = 3^{4 x}

(1.07)^{x} = 2

5 + e^{q} = - \frac{q}{2} + 2

5600000=(1.2)^t*800000

5600000 = (1.2)^{t} \cdot 800000

Frequently Asked Questions (FAQ)

What is the answer to 27^{-x-1}=81 ?
The answer to 27^{-x-1}=81 is x=-7/3
Solve for x: 27^{-x-1}=81
The solution is x=-7/3