217=7(3+7n)

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Solution for 217=7(3+7n) equation: 



217=7(3+7n)

We move all terms to the left:

217-(7(3+7n))=0

We add all the numbers together, and all the variables

-(7(7n+3))+217=0



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

7(7n+3)

We multiply parentheses

49n+21

Back to the equation:

-(49n+21)



We get rid of parentheses

-49n-21+217=0

We add all the numbers together, and all the variables

-49n+196=0

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

-49n=-196

n=-196/-49

n=+4

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