4r+9=28

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Solution for 4r+9=28 equation: 



4r+9=28

We move all terms to the left:

4r+9-(28)=0

We add all the numbers together, and all the variables

4r-19=0

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

4r=19

r=19/4

r=4+3/4

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