140=-7(8-4n)

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Solution for 140=-7(8-4n) equation: 



140=-7(8-4n)

We move all terms to the left:

140-(-7(8-4n))=0

We add all the numbers together, and all the variables

-(-7(-4n+8))+140=0



We calculate terms in parentheses: -(-7(-4n+8)), so:

-7(-4n+8)

We multiply parentheses

28n-56

Back to the equation:

-(28n-56)



We get rid of parentheses

-28n+56+140=0

We add all the numbers together, and all the variables

-28n+196=0

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

-28n=-196

n=-196/-28

n=+7

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