(13-2x+x)+(13-2x+x)=20

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Solution for (13-2x+x)+(13-2x+x)=20 equation: 



(13-2x+x)+(13-2x+x)=20

We move all terms to the left:

(13-2x+x)+(13-2x+x)-(20)=0

We add all the numbers together, and all the variables

(-1x+13)+(-1x+13)-20=0

We get rid of parentheses

-1x-1x+13+13-20=0

We add all the numbers together, and all the variables

-2x+6=0

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

-2x=-6

x=-6/-2

x=+3

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