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Popular >

27^{1-x}= 1/81

Solution

2 7^{1 - x} = \frac{1}{81}

Solution

x = \frac{7}{3}

+1

Decimal Notation

x = 2.33333 \dots

Solution steps

2 7^{1 - x} = \frac{1}{81}

Apply exponent rules

3 (1 - x) = - 4

Solve

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

x = \frac{7}{3}

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7^{24 - x} = 49

e^{2x}-e^x-72=0

e^{2 x} - e^{x} - 72 = 0

3^{x} - 8 = 3^{2 - x}

Frequently Asked Questions (FAQ)

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