81=25+7n

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Solution for 81=25+7n equation: 



81=25+7n

We move all terms to the left:

81-(25+7n)=0

We add all the numbers together, and all the variables

-(7n+25)+81=0

We get rid of parentheses

-7n-25+81=0

We add all the numbers together, and all the variables

-7n+56=0

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

-7n=-56

n=-56/-7

n=+8

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