2+u=9+2u

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Solution for 2+u=9+2u equation: 



2+u=9+2u

We move all terms to the left:

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

We add all the numbers together, and all the variables

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

We get rid of parentheses

u-2u-9+2=0

We add all the numbers together, and all the variables

-1u-7=0

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

-u=7

u=7/-1

u=-7

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