3=(-x)

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Solution for 3=(-x) equation: 



3=(-x)

We move all terms to the left:

3-((-x))=0

We add all the numbers together, and all the variables

-((-1x))+3=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

-(-1x)+3=0

We get rid of parentheses

1x+3=0

We add all the numbers together, and all the variables

x+3=0

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

x=-3

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