15n=72+9n

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Solution for 15n=72+9n equation: 



15n=72+9n

We move all terms to the left:

15n-(72+9n)=0

We add all the numbers together, and all the variables

15n-(9n+72)=0

We get rid of parentheses

15n-9n-72=0

We add all the numbers together, and all the variables

6n-72=0

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

6n=72

n=72/6

n=12

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