40-4r=8r

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Solution for 40-4r=8r equation: 



40-4r=8r

We move all terms to the left:

40-4r-(8r)=0

We add all the numbers together, and all the variables

-12r+40=0

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

-12r=-40

r=-40/-12

r=3+1/3

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