20=-7n-3n

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Solution for 20=-7n-3n equation: 



20=-7n-3n

We move all terms to the left:

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

We add all the numbers together, and all the variables

-(-10n)+20=0

We get rid of parentheses

10n+20=0

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

10n=-20

n=-20/10

n=-2

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