2n+9=n-3=3

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



2n+9=n-3=3

We move all terms to the left:

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

We get rid of parentheses

2n-n+3+9=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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