6+3n=6n+9

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



6+3n=6n+9

We move all terms to the left:

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

We get rid of parentheses

3n-6n-9+6=0

We add all the numbers together, and all the variables

-3n-3=0

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

-3n=3

n=3/-3

n=-1

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