-(1-7n)-3=20-n

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Solution for -(1-7n)-3=20-n equation: 



-(1-7n)-3=20-n

We move all terms to the left:

-(1-7n)-3-(20-n)=0

We add all the numbers together, and all the variables

-(-7n+1)-(-1n+20)-3=0

We get rid of parentheses

7n+1n-1-20-3=0

We add all the numbers together, and all the variables

8n-24=0

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

8n=24

n=24/8

n=3

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