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tatyana61 [14]
3 years ago
10

8+a=21 plssssssssssssszzzz​

Mathematics
1 answer:
attashe74 [19]3 years ago
8 0

Answer:

13

Step-by-step explanation:

because a is the missing number. Well, 21 minus or -  8 is equal to 13.

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<h3>What is a histogram?</h3>

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