8r+4=4r

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Solution for 8r+4=4r equation: 



8r+4=4r

We move all terms to the left:

8r+4-(4r)=0

We add all the numbers together, and all the variables

4r+4=0

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

4r=-4

r=-4/4

r=-1

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