(-4r+r)=27

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Solution for (-4r+r)=27 equation: 



(-4r+r)=27

We move all terms to the left:

(-4r+r)-(27)=0

We add all the numbers together, and all the variables

(-3r)-27=0

We get rid of parentheses

-3r-27=0

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

-3r=27

r=27/-3

r=-9

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