-11=u+7

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Solution for -11=u+7 equation: 



-11=u+7

We move all terms to the left:

-11-(u+7)=0

We get rid of parentheses

-u-7-11=0

We add all the numbers together, and all the variables

-1u-18=0

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

-u=18

u=18/-1

u=-18

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