u+30=7u

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Solution for u+30=7u equation: 



u+30=7u

We move all terms to the left:

u+30-(7u)=0

We add all the numbers together, and all the variables

-6u+30=0

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

-6u=-30

u=-30/-6

u=+5

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