6n+18=-(-6-3n)+6n

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Solution for 6n+18=-(-6-3n)+6n equation: 



6n+18=-(-6-3n)+6n

We move all terms to the left:

6n+18-(-(-6-3n)+6n)=0

We add all the numbers together, and all the variables

6n-(-(-3n-6)+6n)+18=0



We calculate terms in parentheses: -(-(-3n-6)+6n), so:

-(-3n-6)+6n

We add all the numbers together, and all the variables

6n-(-3n-6)

We get rid of parentheses

6n+3n+6

We add all the numbers together, and all the variables

9n+6

Back to the equation:

-(9n+6)



We get rid of parentheses

6n-9n-6+18=0

We add all the numbers together, and all the variables

-3n+12=0

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

-3n=-12

n=-12/-3

n=+4

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