3x=(-x)=200

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Solution for 3x=(-x)=200 equation: 



3x=(-x)=200

We move all terms to the left:

3x-((-x))=0

We add all the numbers together, and all the variables

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



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

(-1x)

We get rid of parentheses

-x

Back to the equation:

-(-x)



We add all the numbers together, and all the variables

3x-(-1x)=0

We get rid of parentheses

3x+1x=0

We add all the numbers together, and all the variables

4x=0

x=0/4

x=0

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