r-4r=11

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Solution for r-4r=11 equation: 



r-4r=11

We move all terms to the left:

r-4r-(11)=0

We add all the numbers together, and all the variables

-3r-11=0

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

-3r=11

r=11/-3

r=-3+2/3

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