15=9+.75n

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Solution for 15=9+.75n equation: 



15=9+.75n

We move all terms to the left:

15-(9+.75n)=0

We add all the numbers together, and all the variables

-(.75n+9)+15=0

We get rid of parentheses

-.75n-9+15=0

We add all the numbers together, and all the variables

-0.75n+6=0

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

-0.75n=-6

n=-6/-0.75

n=+8

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