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

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



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

We move all terms to the left:

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

We add all the numbers together, and all the variables

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

We add all the numbers together, and all the variables

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

We get rid of parentheses

-1x-x-3-3=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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