28=r-9(2r+6)

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Solution for 28=r-9(2r+6) equation: 



28=r-9(2r+6)

We move all terms to the left:

28-(r-9(2r+6))=0



We calculate terms in parentheses: -(r-9(2r+6)), so:

r-9(2r+6)

We multiply parentheses

r-18r-54

We add all the numbers together, and all the variables

-17r-54

Back to the equation:

-(-17r-54)



We get rid of parentheses

17r+54+28=0

We add all the numbers together, and all the variables

17r+82=0

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

17r=-82

r=-82/17

r=-4+14/17

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