9=5(1+n)+4(1-3n)

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Solution for 9=5(1+n)+4(1-3n) equation: 



9=5(1+n)+4(1-3n)

We move all terms to the left:

9-(5(1+n)+4(1-3n))=0

We add all the numbers together, and all the variables

-(5(n+1)+4(-3n+1))+9=0



We calculate terms in parentheses: -(5(n+1)+4(-3n+1)), so:

5(n+1)+4(-3n+1)

We multiply parentheses

5n-12n+5+4

We add all the numbers together, and all the variables

-7n+9

Back to the equation:

-(-7n+9)



We get rid of parentheses

7n-9+9=0

We add all the numbers together, and all the variables

7n=0

n=0/7

n=0

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