28=4+3(u+5)

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Solution for 28=4+3(u+5) equation: 



28=4+3(u+5)

We move all terms to the left:

28-(4+3(u+5))=0



We calculate terms in parentheses: -(4+3(u+5)), so:

4+3(u+5)

determiningTheFunctionDomain
3(u+5)+4

We multiply parentheses

3u+15+4

We add all the numbers together, and all the variables

3u+19

Back to the equation:

-(3u+19)



We get rid of parentheses

-3u-19+28=0

We add all the numbers together, and all the variables

-3u+9=0

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

-3u=-9

u=-9/-3

u=+3

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