7n+6-4n=-9

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Solution for 7n+6-4n=-9 equation: 



7n+6-4n=-9

We move all terms to the left:

7n+6-4n-(-9)=0

We add all the numbers together, and all the variables

3n+15=0

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

3n=-15

n=-15/3

n=-5

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