28=9r-8

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Solution for 28=9r-8 equation: 



28=9r-8

We move all terms to the left:

28-(9r-8)=0

We get rid of parentheses

-9r+8+28=0

We add all the numbers together, and all the variables

-9r+36=0

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

-9r=-36

r=-36/-9

r=+4

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