Does anyone know this?

Ehsan Shekari asked May 6, 2022

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35 votes

Ehsan Shekari asked May 6, 2022

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17 votes

Answer:

8/21

Explanation:

-1/3 + 5/7=1×7 =-7/21 +15/21

- × -

3. 7

-7/21 + 15/21= -7+15 = 8/21

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Tizbn answered May 11, 2022

by Tizbn

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