3u=9-8u=-31

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Solution for 3u=9-8u=-31 equation: 



3u=9-8u=-31

We move all terms to the left:

3u-(9-8u)=0

We add all the numbers together, and all the variables

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

We get rid of parentheses

3u+8u-9=0

We add all the numbers together, and all the variables

11u-9=0

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

11u=9

u=9/11

u=9/11

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