x=20-(x-1)

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Solution for x=20-(x-1) equation: 



x=20-(x-1)

We move all terms to the left:

x-(20-(x-1))=0



We calculate terms in parentheses: -(20-(x-1)), so:

20-(x-1)

determiningTheFunctionDomain
-(x-1)+20

We get rid of parentheses

-x+1+20

We add all the numbers together, and all the variables

-1x+21

Back to the equation:

-(-1x+21)



We get rid of parentheses

x+1x-21=0

We add all the numbers together, and all the variables

2x-21=0

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

2x=21

x=21/2

x=10+1/2

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