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Popular >

3^{-5x}=81

Solution

3^{- 5 x} = 81

Solution

x = - \frac{4}{5}

+1

Decimal Notation

x = - 0.8

Solution steps

3^{- 5 x} = 81

Apply exponent rules

- 5 x = 4

Solve

- 5 x = 4 : x = - \frac{4}{5}

x = - \frac{4}{5}

Popular Examples

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x, 2 7^{x} = 243

7^{x + 1} = 0

5^x-5^{x-2}=120

5^{x} - 5^{x - 2} = 120

solvefor x,e^x=8 solve for

x, e^{x} = 8

solvefor x,e^x=9 solve for

x, e^{x} = 9

Frequently Asked Questions (FAQ)

What is the answer to 3^{-5x}=81 ?
The answer to 3^{-5x}=81 is x=-4/5
Solve for x: 3^{-5x}=81
The solution is x=-4/5