3+9=n-2n=

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Solution for 3+9=n-2n= equation: 



3+9=n-2n=

We move all terms to the left:

3+9-(n-2n)=0

We add all the numbers together, and all the variables

-(-1n)+3+9=0

We add all the numbers together, and all the variables

-(-1n)+12=0

We get rid of parentheses

1n+12=0

We add all the numbers together, and all the variables

n+12=0

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

n=-12

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