-9=3(u-8)+-9

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Solution for -9=3(u-8)+-9 equation: 



-9=3(u-8)+-9

We move all terms to the left:

-9-(3(u-8)+-9)=0

We use the square of the difference formula

-(3(u-8)-9)-9=0



We calculate terms in parentheses: -(3(u-8)-9), so:

3(u-8)-9

We multiply parentheses

3u-24-9

We add all the numbers together, and all the variables

3u-33

Back to the equation:

-(3u-33)



We get rid of parentheses

-3u+33-9=0

We add all the numbers together, and all the variables

-3u+24=0

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

-3u=-24

u=-24/-3

u=+8

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