12n-9=4n

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Solution for 12n-9=4n equation: 



12n-9=4n

We move all terms to the left:

12n-9-(4n)=0

We add all the numbers together, and all the variables

8n-9=0

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

8n=9

n=9/8

n=1+1/8

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