-28=-20+n

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Solution for -28=-20+n equation: 



-28=-20+n

We move all terms to the left:

-28-(-20+n)=0

We add all the numbers together, and all the variables

-(n-20)-28=0

We get rid of parentheses

-n+20-28=0

We add all the numbers together, and all the variables

-1n-8=0

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

-n=8

n=8/-1

n=-8

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