12-2u=9u+23

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Solution for 12-2u=9u+23 equation: 



12-2u=9u+23

We move all terms to the left:

12-2u-(9u+23)=0

We get rid of parentheses

-2u-9u-23+12=0

We add all the numbers together, and all the variables

-11u-11=0

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

-11u=11

u=11/-11

u=-1

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