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Question
Re-arrange suitably and find the sum in each of the following:
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Solution
\[ (\frac{2}{3} + \frac{1}{3}) + (\frac{- 4}{5} + \frac{2}{5})\]
\[ = \frac{3}{3} + \frac{- 2}{5}\]
\[ = \frac{15 - 6}{15}\]
\[ = \frac{9}{15}\]
\[ = \frac{3}{5}\]
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