12+7.8n=9+8.1n

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Solution for 12+7.8n=9+8.1n equation: 



12+7.8n=9+8.1n

We move all terms to the left:

12+7.8n-(9+8.1n)=0

We add all the numbers together, and all the variables

7.8n-(8.1n+9)+12=0

We get rid of parentheses

7.8n-8.1n-9+12=0

We add all the numbers together, and all the variables

-0.3n+3=0

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

-0.3n=-3

n=-3/-0.3

n=+10

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