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Multiplicative inverse of -9/13=-13/9.
Additive inverse of 5/6=-5/6
Required sum:
Ans:The required sum is -43/18.
2 4 2
Mark as the best if u'd like it
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M.I of  \frac{-9}{13}  \frac{-13}{9}
A.I of  \frac{5}{6}  \frac{-5}{6}

According to question :-

 \frac{-13}{9} + ( \frac{-5}{6}

0 0 0
It can be further simplified
i know
Then u should have simplified...that's the key to become an effective user...understood!
okk sir!!!
u should have said "okk bro"!
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