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

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



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

We move all terms to the left:

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

We multiply parentheses

2n+(n-2)-2-5=0

We get rid of parentheses

2n+n-2-2-5=0

We add all the numbers together, and all the variables

3n-9=0

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

3n=9

n=9/3

n=3

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