3(n+1)/(n-1)=126

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Solution for 3(n+1)/(n-1)=126 equation: 



3(n+1)/(n-1)=126

We move all terms to the left:

3(n+1)/(n-1)-(126)=0



Domain of the equation: (n-1)!=0

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

n!=1

n∈R



We multiply all the terms by the denominator


3(n+1)-126*(n-1)=0

We multiply parentheses

3n-126n+3+126=0

We add all the numbers together, and all the variables

-123n+129=0

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

-123n=-129

n=-129/-123

n=1+2/41

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