20=-2(5n-5)

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Solution for 20=-2(5n-5) equation: 



20=-2(5n-5)

We move all terms to the left:

20-(-2(5n-5))=0



We calculate terms in parentheses: -(-2(5n-5)), so:

-2(5n-5)

We multiply parentheses

-10n+10

Back to the equation:

-(-10n+10)



We get rid of parentheses

10n-10+20=0

We add all the numbers together, and all the variables

10n+10=0

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

10n=-10

n=-10/10

n=-1

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