-90=6n-4(n+5)

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Solution for -90=6n-4(n+5) equation: 



-90=6n-4(n+5)

We move all terms to the left:

-90-(6n-4(n+5))=0



We calculate terms in parentheses: -(6n-4(n+5)), so:

6n-4(n+5)

We multiply parentheses

6n-4n-20

We add all the numbers together, and all the variables

2n-20

Back to the equation:

-(2n-20)



We get rid of parentheses

-2n+20-90=0

We add all the numbers together, and all the variables

-2n-70=0

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

-2n=70

n=70/-2

n=-35

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