7=(u+3)

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Solution for 7=(u+3) equation: 



7=(u+3)

We move all terms to the left:

7-((u+3))=0



We calculate terms in parentheses: -((u+3)), so:

(u+3)

We get rid of parentheses

u+3

Back to the equation:

-(u+3)



We get rid of parentheses

-u-3+7=0

We add all the numbers together, and all the variables

-1u+4=0

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

-u=-4

u=-4/-1

u=+4

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