(2n-20)-4=0

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Solution for (2n-20)-4=0 equation: 



(2n-20)-4=0

We get rid of parentheses

2n-20-4=0

We add all the numbers together, and all the variables

2n-24=0

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

2n=24

n=24/2

n=12

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