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(i) \(a =\) \((\frac{1}{2})\), \(b =\) \((\frac{2}{3})\).
விடை : .
(ii) \(a =\) \((\frac{-3}{5})\) ,\(b =\) \((\frac{2}{15})\) எனில் (a + b) = (a – b) ஐக் காண்க.
விடை : .
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