6(n+1)=9(n-1)

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Solution for 6(n+1)=9(n-1) equation: 



6(n+1)=9(n-1)

We move all terms to the left:

6(n+1)-(9(n-1))=0

We multiply parentheses

6n-(9(n-1))+6=0



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

9(n-1)

We multiply parentheses

9n-9

Back to the equation:

-(9n-9)



We get rid of parentheses

6n-9n+9+6=0

We add all the numbers together, and all the variables

-3n+15=0

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

-3n=-15

n=-15/-3

n=+5

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