2n-4n=2-20

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Solution for 2n-4n=2-20 equation: 



2n-4n=2-20

We move all terms to the left:

2n-4n-(2-20)=0

We add all the numbers together, and all the variables

2n-4n-(-18)=0

We add all the numbers together, and all the variables

-2n+18=0

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

-2n=-18

n=-18/-2

n=+9

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