4n+9=-4n+89

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Solution for 4n+9=-4n+89 equation: 



4n+9=-4n+89

We move all terms to the left:

4n+9-(-4n+89)=0

We get rid of parentheses

4n+4n-89+9=0

We add all the numbers together, and all the variables

8n-80=0

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

8n=80

n=80/8

n=10

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