n-3=4n+9

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Solution for n-3=4n+9 equation: 



n-3=4n+9

We move all terms to the left:

n-3-(4n+9)=0

We get rid of parentheses

n-4n-9-3=0

We add all the numbers together, and all the variables

-3n-12=0

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

-3n=12

n=12/-3

n=-4

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