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sergeinik [125]
2 years ago
11

What is the reasoning of 9 +10 is 21?

Mathematics
2 answers:
velikii [3]2 years ago
4 0

Answer:

the reasoning is incorrect.

Step-by-step explanation:

9+10=19.

kobusy [5.1K]2 years ago
3 0
The correct answer is 19
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Answer:

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