Respuesta :

jajam

Answer:

n = - 4

Step-by-step explanation:

6n + 9 = -3n - 21 - 6

6n + 3n = - 21 - 6 - 9

9n = - 27 - 9

9n = -36

n = -36/9

n = - 4

Answer:

6n+9=−3n−21−6

6n+9=−3n−27

6n=−3n - 36

9n=  -36

n=  -4

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