6n-10n+3-18+n=21

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Solution for 6n-10n+3-18+n=21 equation: 



6n-10n+3-18+n=21

We move all terms to the left:

6n-10n+3-18+n-(21)=0

We add all the numbers together, and all the variables

-3n-36=0

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

-3n=36

n=36/-3

n=-12

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