-28+2r=4(8r-9)

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Solution for -28+2r=4(8r-9) equation: 



-28+2r=4(8r-9)

We move all terms to the left:

-28+2r-(4(8r-9))=0



We calculate terms in parentheses: -(4(8r-9)), so:

4(8r-9)

We multiply parentheses

32r-36

Back to the equation:

-(32r-36)



We get rid of parentheses

2r-32r+36-28=0

We add all the numbers together, and all the variables

-30r+8=0

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

-30r=-8

r=-8/-30

r=4/15

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