4r-8r=28

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Solution for 4r-8r=28 equation: 



4r-8r=28

We move all terms to the left:

4r-8r-(28)=0

We add all the numbers together, and all the variables

-4r-28=0

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

-4r=28

r=28/-4

r=-7

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