2u=18-u

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Solution for 2u=18-u equation: 



2u=18-u

We move all terms to the left:

2u-(18-u)=0

We add all the numbers together, and all the variables

2u-(-1u+18)=0

We get rid of parentheses

2u+1u-18=0

We add all the numbers together, and all the variables

3u-18=0

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

3u=18

u=18/3

u=6

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