12u-9u-u=2

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



12u-9u-u=2

We move all terms to the left:

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

We add all the numbers together, and all the variables

2u-2=0

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

2u=2

u=2/2

u=1

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