15n+9n=72

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Solution for 15n+9n=72 equation: 



15n+9n=72

We move all terms to the left:

15n+9n-(72)=0

We add all the numbers together, and all the variables

24n-72=0

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

24n=72

n=72/24

n=3

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