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NCERT Exemplar Solutions Class 8 Mathematics Solutions for Exponents and Powers - Exercise in Chapter 8 - Exponents and Powers
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(-7 / 5)^{-1} \text {is equal to: }
(a) 5/7 (b) – 5/7 (c) 7/5 (d) -7/5
Answer:
(b) – 5/7
Explanation: (-7 / 5)^{-1}=1 /(-7 / 5)=-5 / 7
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