Question

Add the rational number
$\frac{3}{7} + ( \frac{ - 6}{11} ) + (\frac{ - 8}{21})$
Answer in full explanation otherwise reported​

Answer 1

Answer:

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Answer 2

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$➭ \frac{3}{7} + ( \frac{ - 6}{11} ) + (\frac{ - 8}{21})$

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According to question:-

$= \frac{3}{7} + ( \frac{ -6 }{11} ) + ( \frac{ - 8}{21} )$

$= \frac{3}{7} - \frac{6}{11} - \frac{8}{21}$

Lcm of 7,11 and 21 is 231

Therefore,

$= \frac{99 - 126 - 88}{231}$

$= \frac{99 - 214}{231}$

$= \frac{ - 115}{231}$

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