10=20-2n

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Solution for 10=20-2n equation: 



10=20-2n

We move all terms to the left:

10-(20-2n)=0

We add all the numbers together, and all the variables

-(-2n+20)+10=0

We get rid of parentheses

2n-20+10=0

We add all the numbers together, and all the variables

2n-10=0

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

2n=10

n=10/2

n=5

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