Question

Verily that (a+b) +c = a+(b+c) where

a=-7/11 b=-2/5 c=-3/22​

Answer 1

Answer:

$(a + b) + c = a + (b + c) \\ \\ ( \frac{7}{11} - \frac{2}{5} ) + \frac{3}{22} = \frac{7}{11} + ( \frac{-2}{5} + \frac{3}{22} ) \\ \\ ( \frac{35 - 22}{55} ) + \frac{3}{22} = \frac{7}{11} + ( \frac{ - 44 + 15}{110}) \\ \\ \frac{13}{55} + \frac{3}{22} = \frac{7}{11} - \frac{29}{110} \\ \\ \frac{26 + 15}{110} = \frac{70 - 29}{110} \\ \\ \frac{41}{110} = \frac{41}{110} \: proved$

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