2x=-9-x

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Solution for 2x=-9-x equation: 



2x=-9-x

We move all terms to the left:

2x-(-9-x)=0

We add all the numbers together, and all the variables

2x-(-1x-9)=0

We get rid of parentheses

2x+1x+9=0

We add all the numbers together, and all the variables

3x+9=0

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

3x=-9

x=-9/3

x=-3

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