18-8u=u

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Solution for 18-8u=u equation: 



18-8u=u

We move all terms to the left:

18-8u-(u)=0

We add all the numbers together, and all the variables

-9u+18=0

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

-9u=-18

u=-18/-9

u=+2

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