4=12-3n

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Solution for 4=12-3n equation: 



4=12-3n

We move all terms to the left:

4-(12-3n)=0

We add all the numbers together, and all the variables

-(-3n+12)+4=0

We get rid of parentheses

3n-12+4=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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