7n-15=4n+9

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Solution for 7n-15=4n+9 equation: 



7n-15=4n+9

We move all terms to the left:

7n-15-(4n+9)=0

We get rid of parentheses

7n-4n-9-15=0

We add all the numbers together, and all the variables

3n-24=0

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

3n=24

n=24/3

n=8

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