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iris [78.8K]
3 years ago
10

The sum of twice a number and three is 21. find the number

Mathematics
1 answer:
Alisiya [41]3 years ago
7 0

Answer:

sum of twice a number and three is 21

2x + 3 = 21

x = 9

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Answer:

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Step-by-step explanation:

Given that,

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Estimate the isoelectric point of a ser–his dipeptide. explain why this value is only an estimate.
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</em>
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