-2n=-(9-10n)

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



-2n=-(9-10n)

We move all terms to the left:

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

We add all the numbers together, and all the variables

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



We calculate terms in parentheses: -(-(-10n+9)), so:

-(-10n+9)

We get rid of parentheses

10n-9

Back to the equation:

-(10n-9)



We get rid of parentheses

-2n-10n+9=0

We add all the numbers together, and all the variables

-12n+9=0

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

-12n=-9

n=-9/-12

n=3/4

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