-80=10-9n

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Solution for -80=10-9n equation: 



-80=10-9n

We move all terms to the left:

-80-(10-9n)=0

We add all the numbers together, and all the variables

-(-9n+10)-80=0

We get rid of parentheses

9n-10-80=0

We add all the numbers together, and all the variables

9n-90=0

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

9n=90

n=90/9

n=10

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