20=0.4n-8

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Solution for 20=0.4n-8 equation: 



20=0.4n-8

We move all terms to the left:

20-(0.4n-8)=0

We get rid of parentheses

-0.4n+8+20=0

We add all the numbers together, and all the variables

-0.4n+28=0

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

-0.4n=-28

n=-28/-0.4

n=+70

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