-2u+9=3

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Solution for -2u+9=3 equation: 



-2u+9=3

We move all terms to the left:

-2u+9-(3)=0

We add all the numbers together, and all the variables

-2u+6=0

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

-2u=-6

u=-6/-2

u=+3

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