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Ksivusya [100]
3 years ago
11

Add.

Mathematics
1 answer:
Ann [662]3 years ago
6 0

Answer:

17. +5-2-1=+2

18. -7-6-2=15

19. +11-9-4=-2

20.+4-8+6=+2

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Yes, the answer is C {3,5,7}

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777dan777 [17]

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Answer:

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Step-by-step explanation:

So, lets go over what we know:

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This is our answer! Hope this helps! :3

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