if a=-11/18,b=2/9,c=-4/27,verify a+(b+c)=(a+b)+c

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Solution

$D e a r s t u d e n t, a = \frac{- 11}{18}, b = \frac{2}{9}, c = \frac{- 4}{27} L H S : a + (b + c) = \frac{- 11}{18} + (\frac{2}{9} + (\frac{- 4}{27})) = \frac{- 11}{18} + (\frac{6 - 4}{27}) = \frac{- 11}{18} + \frac{2}{27} = \frac{- 33 + 4}{54} = \frac{- 29}{54} R H S : (a + b) + c = (\frac{- 11}{18} + \frac{2}{9}) + (\frac{- 4}{27}) = (\frac{- 11 + 4}{18}) + (\frac{- 4}{27}) = (\frac{- 7}{18}) + (\frac{- 4}{27}) = \frac{- 21 - 8}{54} = \frac{- 29}{54} L H S = R H S (H e n c e V e r i f i e d) R e g a r d s$

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