9u=15+6u

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Solution for 9u=15+6u equation: 



9u=15+6u

We move all terms to the left:

9u-(15+6u)=0

We add all the numbers together, and all the variables

9u-(6u+15)=0

We get rid of parentheses

9u-6u-15=0

We add all the numbers together, and all the variables

3u-15=0

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

3u=15

u=15/3

u=5

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