Question

show (-2/5 + 4/9)+(-3/4)=2/5+(4/9+-3/4)

Answer 1

=> (-a + b) + (-c) ≠ a + (b + (-c) )

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●GIVEN QUESTION :-

$= > ( \frac{ - 2}{5} + \frac{4}{9} ) + \frac{ - 3}{4} = \frac{2}{5} + ( \frac{4}{9} + \frac{ - 3}{4} ) \\ \\ = > ( \frac{( - 2) \times 9 + 4 \times 5}{45}) + \frac{ - 3}{4} = \frac{2}{5} + ( \frac{4 \times 4 + ( - 3) \times 9}{36} ) \\ \\ = > \frac{ - 18 + 20}{45} + \frac{ - 3}{4} = \frac{2}{5} + \frac{16 - 27}{36} \\ \\ = > \frac{ - 2}{45} + \frac{ - 3}{4} = \frac{2}{5} + \frac{ - 11}{36} \\ \\ = > \frac{ - 8 - 135}{180} = \frac{72 - 55}{180} \\ \\ = > - 143 = 17$
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●SO.... WE KNOW THAT :-

●"-143" is never equal to "17"

●THEN

=> -143 ≠ 17

So

=> (-2/5 + 4/9) + (-3/4) ≠ 2/5 + (4/9 + -3/4)

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____☆$BE \: \: \: BRAINLY$☆_____

Answer 2

Answer -143 = 17

i hope this help you