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Mrrafil [7]
3 years ago
15

10) 3(n + 3) - 9 = 15 solve for n​

Mathematics
2 answers:
den301095 [7]3 years ago
8 0

Answer:

n=5

Step-by-step explanation:

We can first expand the 3(n+3) into 3n + 3*3. The equation now looks like this. 3n+9-9=15. 9-9=0, so now it is just 3n=15. We divide both sides by 3, and get n=5.

Tasya [4]3 years ago
3 0

Answer:

n = 5

Step-by-step explanation:

3(n + 3) - 9 = 15

Add 9 to each side

3(n + 3) - 9+9 = 15+9

3(n+3) = 24

Divide each side by 3

3/3(n+3) = 24/3

n+3 = 8

Subtract 3 from each side

n+3-3 = 8-3

n = 5

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