27+9u=12u

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Solution for 27+9u=12u equation: 



27+9u=12u

We move all terms to the left:

27+9u-(12u)=0

We add all the numbers together, and all the variables

-3u+27=0

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

-3u=-27

u=-27/-3

u=+9

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