3=-(2x+1)

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Solution for 3=-(2x+1) equation: 



3=-(2x+1)

We move all terms to the left:

3-(-(2x+1))=0



We calculate terms in parentheses: -(-(2x+1)), so:

-(2x+1)

We get rid of parentheses

-2x-1

Back to the equation:

-(-2x-1)



We get rid of parentheses

2x+1+3=0

We add all the numbers together, and all the variables

2x+4=0

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

2x=-4

x=-4/2

x=-2

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