20n-40-20n=4n-8

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Solution for 20n-40-20n=4n-8 equation: 



20n-40-20n=4n-8

We move all terms to the left:

20n-40-20n-(4n-8)=0

We add all the numbers together, and all the variables

-(4n-8)-40=0

We get rid of parentheses

-4n+8-40=0

We add all the numbers together, and all the variables

-4n-32=0

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

-4n=32

n=32/-4

n=-8

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