7(1-N)=20+2n

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Solution for 7(1-N)=20+2n equation: 



7(1-)=20+2N

We move all terms to the left:

7(1-)-(20+2N)=0

We add all the numbers together, and all the variables

-(2N+20)+70=0

We get rid of parentheses

-2N-20+70=0

We add all the numbers together, and all the variables

-2N+50=0

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

-2N=-50

N=-50/-2

N=+25

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