-2n-20=-4(2n-1)

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Solution for -2n-20=-4(2n-1) equation: 



-2n-20=-4(2n-1)

We move all terms to the left:

-2n-20-(-4(2n-1))=0



We calculate terms in parentheses: -(-4(2n-1)), so:

-4(2n-1)

We multiply parentheses

-8n+4

Back to the equation:

-(-8n+4)



We get rid of parentheses

-2n+8n-4-20=0

We add all the numbers together, and all the variables

6n-24=0

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

6n=24

n=24/6

n=4

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