You might want to try the change of base law. If the exponent was unknown and we already knew the value of the base? Unless an exact value is not required, you can only
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3 x − 5 = 81 {\displaystyle 3^ {x-5}=81} . You need to change 81 to an exponent with a base of 3, so that it matches the other exponential
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One way to think about math problems is to consider them as puzzles. To solve a math problem, you need to figure out what information you have.
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To figure out a math equation, you need to take the given information and solve for the unknown variable.
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