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प्रश्न
Evaluate.
`{(1/3)^(-1) - (1/4)^(-1)}^(-1)`
मूल्यांकन
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उत्तर
`{(1/3)^(-1) - (1/4)^(-1)}^(-1) = {(3/1)^1 - (4/1)}^(-1)` ...`[∵ (a/b)^-m = (b/a)^m]`
= (3 − 4)−1
= (−1)−1
= `1/(-1)`
= −1
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