2n+9=-15

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Solution for 2n+9=-15 equation: 



2n+9=-15

We move all terms to the left:

2n+9-(-15)=0

We add all the numbers together, and all the variables

2n+24=0

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

2n=-24

n=-24/2

n=-12

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