-13=7(u-4)-4u

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Solution for -13=7(u-4)-4u equation: 



-13=7(u-4)-4u

We move all terms to the left:

-13-(7(u-4)-4u)=0



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

7(u-4)-4u

We add all the numbers together, and all the variables

-4u+7(u-4)

We multiply parentheses

-4u+7u-28

We add all the numbers together, and all the variables

3u-28

Back to the equation:

-(3u-28)



We get rid of parentheses

-3u+28-13=0

We add all the numbers together, and all the variables

-3u+15=0

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

-3u=-15

u=-15/-3

u=+5

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