28=-4+9(s+7)

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Solution for 28=-4+9(s+7) equation: 



28=-4+9(s+7)

We move all terms to the left:

28-(-4+9(s+7))=0



We calculate terms in parentheses: -(-4+9(s+7)), so:

-4+9(s+7)

determiningTheFunctionDomain
9(s+7)-4

We multiply parentheses

9s+63-4

We add all the numbers together, and all the variables

9s+59

Back to the equation:

-(9s+59)



We get rid of parentheses

-9s-59+28=0

We add all the numbers together, and all the variables

-9s-31=0

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

-9s=31

s=31/-9

s=-3+4/9

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