-6n+7(-3+9n)=3(7+5n)

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Solution for -6n+7(-3+9n)=3(7+5n) equation: 



-6n+7(-3+9n)=3(7+5n)

We move all terms to the left:

-6n+7(-3+9n)-(3(7+5n))=0

We add all the numbers together, and all the variables

-6n+7(9n-3)-(3(5n+7))=0

We multiply parentheses

-6n+63n-(3(5n+7))-21=0



We calculate terms in parentheses: -(3(5n+7)), so:

3(5n+7)

We multiply parentheses

15n+21

Back to the equation:

-(15n+21)



We add all the numbers together, and all the variables

57n-(15n+21)-21=0

We get rid of parentheses

57n-15n-21-21=0

We add all the numbers together, and all the variables

42n-42=0

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

42n=42

n=42/42

n=1

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