9-7u=8u-3-9u

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Solution for 9-7u=8u-3-9u equation: 



9-7u=8u-3-9u

We move all terms to the left:

9-7u-(8u-3-9u)=0

We add all the numbers together, and all the variables

-7u-(-1u-3)+9=0

We get rid of parentheses

-7u+1u+3+9=0

We add all the numbers together, and all the variables

-6u+12=0

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

-6u=-12

u=-12/-6

u=+2

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