8=u+7u

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Solution for 8=u+7u equation: 



8=u+7u

We move all terms to the left:

8-(u+7u)=0

We add all the numbers together, and all the variables

-(+8u)+8=0

We get rid of parentheses

-8u+8=0

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

-8u=-8

u=-8/-8

u=1

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