9=2u+2

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Solution for 9=2u+2 equation: 



9=2u+2

We move all terms to the left:

9-(2u+2)=0

We get rid of parentheses

-2u-2+9=0

We add all the numbers together, and all the variables

-2u+7=0

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

-2u=-7

u=-7/-2

u=3+1/2

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