-4=-4(n+20)

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Solution for -4=-4(n+20) equation: 



-4=-4(n+20)

We move all terms to the left:

-4-(-4(n+20))=0



We calculate terms in parentheses: -(-4(n+20)), so:

-4(n+20)

We multiply parentheses

-4n-80

Back to the equation:

-(-4n-80)



We get rid of parentheses

4n+80-4=0

We add all the numbers together, and all the variables

4n+76=0

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

4n=-76

n=-76/4

n=-19

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