140=7(4-3n)+5n

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Solution for 140=7(4-3n)+5n equation: 



140=7(4-3n)+5n

We move all terms to the left:

140-(7(4-3n)+5n)=0

We add all the numbers together, and all the variables

-(7(-3n+4)+5n)+140=0



We calculate terms in parentheses: -(7(-3n+4)+5n), so:

7(-3n+4)+5n

We add all the numbers together, and all the variables

5n+7(-3n+4)

We multiply parentheses

5n-21n+28

We add all the numbers together, and all the variables

-16n+28

Back to the equation:

-(-16n+28)



We get rid of parentheses

16n-28+140=0

We add all the numbers together, and all the variables

16n+112=0

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

16n=-112

n=-112/16

n=-7

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