9n-4+7=12

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Solution for 9n-4+7=12 equation: 



9n-4+7=12

We move all terms to the left:

9n-4+7-(12)=0

We add all the numbers together, and all the variables

9n-9=0

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

9n=9

n=9/9

n=1

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