3u=6+u

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Solution for 3u=6+u equation: 



3u=6+u

We move all terms to the left:

3u-(6+u)=0

We add all the numbers together, and all the variables

3u-(u+6)=0

We get rid of parentheses

3u-u-6=0

We add all the numbers together, and all the variables

2u-6=0

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

2u=6

u=6/2

u=3

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