2(x+9)=-2(x+9)

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Solution for 2(x+9)=-2(x+9) equation: 



2(x+9)=-2(x+9)

We move all terms to the left:

2(x+9)-(-2(x+9))=0

We multiply parentheses

2x-(-2(x+9))+18=0



We calculate terms in parentheses: -(-2(x+9)), so:

-2(x+9)

We multiply parentheses

-2x-18

Back to the equation:

-(-2x-18)



We get rid of parentheses

2x+2x+18+18=0

We add all the numbers together, and all the variables

4x+36=0

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

4x=-36

x=-36/4

x=-9

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