w+9=-2w

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Solution for w+9=-2w equation: 



w+9=-2w

We move all terms to the left:

w+9-(-2w)=0

We get rid of parentheses

w+2w+9=0

We add all the numbers together, and all the variables

3w+9=0

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

3w=-9

w=-9/3

w=-3

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