(n+1)+(n+3)-9+2=5

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Solution for (n+1)+(n+3)-9+2=5 equation: 



(n+1)+(n+3)-9+2=5

We move all terms to the left:

(n+1)+(n+3)-9+2-(5)=0

We add all the numbers together, and all the variables

(n+1)+(n+3)-12=0

We get rid of parentheses

n+n+1+3-12=0

We add all the numbers together, and all the variables

2n-8=0

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

2n=8

n=8/2

n=4

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