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crimeas [40]
3 years ago
12

3(n+4)=21 what does n =?

Mathematics
2 answers:
love history [14]3 years ago
8 0

Answer:

n = 3

Step-by-step explanation:

Given

3(n + 4) = 21 ( divide both sides by 3 )

n + 4 = 7 ( subtract 4 from both sides )

n = 3

Brilliant_brown [7]3 years ago
7 0

Answer:

3.

Step-by-step explanation:

3(n + 4) = 21

3n + 12 = 21

3n = 21 - 12 = 9

n = 3.

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