-3(-7u+8)-9u=3(u-7)-9

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Solution for -3(-7u+8)-9u=3(u-7)-9 equation: 



-3(-7u+8)-9u=3(u-7)-9

We move all terms to the left:

-3(-7u+8)-9u-(3(u-7)-9)=0

We add all the numbers together, and all the variables

-9u-3(-7u+8)-(3(u-7)-9)=0

We multiply parentheses

-9u+21u-(3(u-7)-9)-24=0



We calculate terms in parentheses: -(3(u-7)-9), so:

3(u-7)-9

We multiply parentheses

3u-21-9

We add all the numbers together, and all the variables

3u-30

Back to the equation:

-(3u-30)



We add all the numbers together, and all the variables

12u-(3u-30)-24=0

We get rid of parentheses

12u-3u+30-24=0

We add all the numbers together, and all the variables

9u+6=0

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

9u=-6

u=-6/9

u=-2/3

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