28=2u-(-4)

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Solution for 28=2u-(-4) equation: 



28=2u-(-4)

We move all terms to the left:

28-(2u-(-4))=0



We calculate terms in parentheses: -(2u-(-4)), so:

2u-(-4)

We add all the numbers together, and all the variables

2u+4

Back to the equation:

-(2u+4)



We get rid of parentheses

-2u-4+28=0

We add all the numbers together, and all the variables

-2u+24=0

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

-2u=-24

u=-24/-2

u=+12

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