12=7(u+6)-4u

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Solution for 12=7(u+6)-4u equation: 



12=7(u+6)-4u

We move all terms to the left:

12-(7(u+6)-4u)=0



We calculate terms in parentheses: -(7(u+6)-4u), so:

7(u+6)-4u

We add all the numbers together, and all the variables

-4u+7(u+6)

We multiply parentheses

-4u+7u+42

We add all the numbers together, and all the variables

3u+42

Back to the equation:

-(3u+42)



We get rid of parentheses

-3u-42+12=0

We add all the numbers together, and all the variables

-3u-30=0

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

-3u=30

u=30/-3

u=-10

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