x-(x-1)-(x-3)=20

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Solution for x-(x-1)-(x-3)=20 equation: 



x-(x-1)-(x-3)=20

We move all terms to the left:

x-(x-1)-(x-3)-(20)=0

We get rid of parentheses

x-x-x+1+3-20=0

We add all the numbers together, and all the variables

-1x-16=0

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

-x=16

x=16/-1

x=-16

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