100=-4(5-5n)

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Solution for 100=-4(5-5n) equation: 



100=-4(5-5n)

We move all terms to the left:

100-(-4(5-5n))=0

We add all the numbers together, and all the variables

-(-4(-5n+5))+100=0



We calculate terms in parentheses: -(-4(-5n+5)), so:

-4(-5n+5)

We multiply parentheses

20n-20

Back to the equation:

-(20n-20)



We get rid of parentheses

-20n+20+100=0

We add all the numbers together, and all the variables

-20n+120=0

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

-20n=-120

n=-120/-20

n=+6

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