-20=-5-5n

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Solution for -20=-5-5n equation: 



-20=-5-5n

We move all terms to the left:

-20-(-5-5n)=0

We add all the numbers together, and all the variables

-(-5n-5)-20=0

We get rid of parentheses

5n+5-20=0

We add all the numbers together, and all the variables

5n-15=0

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

5n=15

n=15/5

n=3

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