7+n=7(1-10n)+9n

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Solution for 7+n=7(1-10n)+9n equation: 



7+n=7(1-10n)+9n

We move all terms to the left:

7+n-(7(1-10n)+9n)=0

We add all the numbers together, and all the variables

n-(7(-10n+1)+9n)+7=0



We calculate terms in parentheses: -(7(-10n+1)+9n), so:

7(-10n+1)+9n

We add all the numbers together, and all the variables

9n+7(-10n+1)

We multiply parentheses

9n-70n+7

We add all the numbers together, and all the variables

-61n+7

Back to the equation:

-(-61n+7)



We get rid of parentheses

n+61n-7+7=0

We add all the numbers together, and all the variables

62n=0

n=0/62

n=0

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