28+23=-8r-9r

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Solution for 28+23=-8r-9r equation: 



28+23=-8r-9r

We move all terms to the left:

28+23-(-8r-9r)=0

We add all the numbers together, and all the variables

-(-17r)+28+23=0

We add all the numbers together, and all the variables

-(-17r)+51=0

We get rid of parentheses

17r+51=0

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

17r=-51

r=-51/17

r=-3

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