5=-2+u

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Solution for 5=-2+u equation: 



5=-2+u

We move all terms to the left:

5-(-2+u)=0

We add all the numbers together, and all the variables

-(u-2)+5=0

We get rid of parentheses

-u+2+5=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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