6+u=-2u

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Solution for 6+u=-2u equation: 



6+u=-2u

We move all terms to the left:

6+u-(-2u)=0

We get rid of parentheses

u+2u+6=0

We add all the numbers together, and all the variables

3u+6=0

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

3u=-6

u=-6/3

u=-2

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