u+30=2u

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Solution for u+30=2u equation: 



u+30=2u

We move all terms to the left:

u+30-(2u)=0

We add all the numbers together, and all the variables

-1u+30=0

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

-u=-30

u=-30/-1

u=+30

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