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Alex Ar [27]
2 years ago
10

Explain how you decided what number sentence to write for exercise 1 how to do that

Mathematics
1 answer:
Musya8 [376]2 years ago
8 0
The answer is 21 i really don't know 
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<em>Additional comment</em>

The second equation suffers from a typo, so your answer may vary.

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