28=8+7(r+2)

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Solution for 28=8+7(r+2) equation: 



28=8+7(r+2)

We move all terms to the left:

28-(8+7(r+2))=0



We calculate terms in parentheses: -(8+7(r+2)), so:

8+7(r+2)

determiningTheFunctionDomain
7(r+2)+8

We multiply parentheses

7r+14+8

We add all the numbers together, and all the variables

7r+22

Back to the equation:

-(7r+22)



We get rid of parentheses

-7r-22+28=0

We add all the numbers together, and all the variables

-7r+6=0

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

-7r=-6

r=-6/-7

r=6/7

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