-28=8(u+7)+4u

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Solution for -28=8(u+7)+4u equation: 



-28=8(u+7)+4u

We move all terms to the left:

-28-(8(u+7)+4u)=0



We calculate terms in parentheses: -(8(u+7)+4u), so:

8(u+7)+4u

We add all the numbers together, and all the variables

4u+8(u+7)

We multiply parentheses

4u+8u+56

We add all the numbers together, and all the variables

12u+56

Back to the equation:

-(12u+56)



We get rid of parentheses

-12u-56-28=0

We add all the numbers together, and all the variables

-12u-84=0

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

-12u=84

u=84/-12

u=-7

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