6n+9=-3n-216

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Solution for 6n+9=-3n-216 equation: 



6n+9=-3n-216

We move all terms to the left:

6n+9-(-3n-216)=0

We get rid of parentheses

6n+3n+216+9=0

We add all the numbers together, and all the variables

9n+225=0

We move all terms containing n to the left, all other terms to the right

9n=-225

n=-225/9

n=-25

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