You can put this solution on YOUR website! Evaluate the expression (1/3)-1 and write your answer as a fraction in simplest form.
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If that -1 is an exponent you should post your problem as follows:
(1/3)^-1
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The negative in the exponent means "invert".
The answer would be:
(1/3)^-1 = 3
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Cheers,
Stan H.