6+n=12+3

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Solution for 6+n=12+3 equation: 



6+n=12+3

We move all terms to the left:

6+n-(12+3)=0

We add all the numbers together, and all the variables

n+6-15=0

We add all the numbers together, and all the variables

n-9=0

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

n=9

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