9n-3=4n+12

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Solution for 9n-3=4n+12 equation: 



9n-3=4n+12

We move all terms to the left:

9n-3-(4n+12)=0

We get rid of parentheses

9n-4n-12-3=0

We add all the numbers together, and all the variables

5n-15=0

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

5n=15

n=15/5

n=3

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