-3u=-9-2u

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Solution for -3u=-9-2u equation: 



-3u=-9-2u

We move all terms to the left:

-3u-(-9-2u)=0

We add all the numbers together, and all the variables

-3u-(-2u-9)=0

We get rid of parentheses

-3u+2u+9=0

We add all the numbers together, and all the variables

-1u+9=0

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

-u=-9

u=-9/-1

u=+9

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