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21 = 3 + 4n + 5n please help

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21 = 3 + 4n + 5n please help

asked Dec 11, 2022 223k views

1 vote

21 = 3 + 4n + 5n
please help

Mathematics
high-school

7.9k points

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2 Answers

3 votes

Answer:

n=2

Explanation:

21 = 3 + 4n + 5n

21 = 3 + 9n

9n = 18

n = 2

;)

Cristobal answered Dec 13, 2022

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2 votes

Answer: n = 2

Explanation:

Ankit Giri answered Dec 15, 2022

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