-3n-18=3+7(1-n)

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Solution for -3n-18=3+7(1-n) equation: 



-3n-18=3+7(1-n)

We move all terms to the left:

-3n-18-(3+7(1-n))=0

We add all the numbers together, and all the variables

-3n-(3+7(-1n+1))-18=0



We calculate terms in parentheses: -(3+7(-1n+1)), so:

3+7(-1n+1)

determiningTheFunctionDomain
7(-1n+1)+3

We multiply parentheses

-7n+7+3

We add all the numbers together, and all the variables

-7n+10

Back to the equation:

-(-7n+10)



We get rid of parentheses

-3n+7n-10-18=0

We add all the numbers together, and all the variables

4n-28=0

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

4n=28

n=28/4

n=7

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