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Kruka [31]
3 years ago
9

3n=30+3n(n-4) Find n. .-.​

Mathematics
2 answers:
Yuri [45]3 years ago
8 0

Answer:

n=6

Step-by-step explanation:

6n= 30+3(n-4)

6n=30+3n-12

6n-3n=30-12

3n=18

n=18/3

n=6

noname [10]3 years ago
5 0

Answer and Step-by-step explanation:

 6n = 30 + 3(n - 4)

 6n = 30 + 3n - 12

 6n = 18 + 3n

 -3n         -3n

 3n = 18

\frac{3n}{3} = \frac{18}{3}

   n = 6

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