-10=-2n-(-9)

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Solution for -10=-2n-(-9) equation: 



-10=-2n-(-9)

We move all terms to the left:

-10-(-2n-(-9))=0



We calculate terms in parentheses: -(-2n-(-9)), so:

-2n-(-9)

We add all the numbers together, and all the variables

-2n+9

Back to the equation:

-(-2n+9)



We get rid of parentheses

2n-9-10=0

We add all the numbers together, and all the variables

2n-19=0

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

2n=19

n=19/2

n=9+1/2

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