810=729+9n

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Solution for 810=729+9n equation: 



810=729+9n

We move all terms to the left:

810-(729+9n)=0

We add all the numbers together, and all the variables

-(9n+729)+810=0

We get rid of parentheses

-9n-729+810=0

We add all the numbers together, and all the variables

-9n+81=0

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

-9n=-81

n=-81/-9

n=+9

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