3n+4n=8+4n=12

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Solution for 3n+4n=8+4n=12 equation: 



3n+4n=8+4n=12

We move all terms to the left:

3n+4n-(8+4n)=0

We add all the numbers together, and all the variables

3n+4n-(4n+8)=0

We add all the numbers together, and all the variables

7n-(4n+8)=0

We get rid of parentheses

7n-4n-8=0

We add all the numbers together, and all the variables

3n-8=0

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

3n=8

n=8/3

n=2+2/3

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