39=(39-x)-x

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Solution for 39=(39-x)-x equation: 



39=(39-x)-x

We move all terms to the left:

39-((39-x)-x)=0

We add all the numbers together, and all the variables

-((-1x+39)-x)+39=0



We calculate terms in parentheses: -((-1x+39)-x), so:

(-1x+39)-x

We add all the numbers together, and all the variables

-1x+(-1x+39)

We get rid of parentheses

-1x-1x+39

We add all the numbers together, and all the variables

-2x+39

Back to the equation:

-(-2x+39)



We get rid of parentheses

2x-39+39=0

We add all the numbers together, and all the variables

2x=0

x=0/2

x=0

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