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Verify that -(-x) = x for (i) x = 11/5 (ii) x = -13/17

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Verify that -(-x) = x for

(i) x = \(\frac{11}{5}\)

(ii) x = \(\frac{-13}{17}\)

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(i) We have x = \(\frac{11}{15}\)

∴ -x = \(\frac{-11}{15}\)

-(-x) = -\((\frac{-11}{15})\)

= \(\frac{11}{15}\) = x (verified)

[∵ (-) x (-) = (+)]

(ii) We have x = -\(\frac{13}{17}\)

∴ -x = \(\frac{-13}{17}\) = \(\frac{13}{17}\)

[∵ (-) x (-) = (+)]

-(-x) = \(\frac{-13}{17}\) = x (verified)

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