2n+9=5

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Solution for 2n+9=5 equation: 



2n+9=5

We move all terms to the left:

2n+9-(5)=0

We add all the numbers together, and all the variables

2n+4=0

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

2n=-4

n=-4/2

n=-2

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