7+7(7n=9)

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Solution for 7+7(7n=9) equation: 



7+7(7n=9)

We move all terms to the left:

7+7(7n-(9))=0

We multiply parentheses

49n-63+7=0

We add all the numbers together, and all the variables

49n-56=0

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

49n=56

n=56/49

n=1+1/7

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