x+(-x)=x+3

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Solution for x+(-x)=x+3 equation: 



x+(-x)=x+3

We move all terms to the left:

x+(-x)-(x+3)=0

We add all the numbers together, and all the variables

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

We get rid of parentheses

x-1x-x-3=0

We add all the numbers together, and all the variables

-1x-3=0

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

-x=3

x=3/-1

x=-3

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