140=7(-4-3n)

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Solution for 140=7(-4-3n) equation: 



140=7(-4-3n)

We move all terms to the left:

140-(7(-4-3n))=0

We add all the numbers together, and all the variables

-(7(-3n-4))+140=0



We calculate terms in parentheses: -(7(-3n-4)), so:

7(-3n-4)

We multiply parentheses

-21n-28

Back to the equation:

-(-21n-28)



We get rid of parentheses

21n+28+140=0

We add all the numbers together, and all the variables

21n+168=0

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

21n=-168

n=-168/21

n=-8

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