-20.5=-4(5.5n-4.5)

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Solution for -20.5=-4(5.5n-4.5) equation: 



-20.5=-4(5.5n-4.5)

We move all terms to the left:

-20.5-(-4(5.5n-4.5))=0



We calculate terms in parentheses: -(-4(5.5n-4.5)), so:

-4(5.5n-4.5)

We multiply parentheses

-20n+18

Back to the equation:

-(-20n+18)



We get rid of parentheses

20n-18-20.5=0

We add all the numbers together, and all the variables

20n-38.5=0

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

20n=38.5

n=38.5/20

n=1+7.4/8

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