9-4r=27

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Solution for 9-4r=27 equation: 



9-4r=27

We move all terms to the left:

9-4r-(27)=0

We add all the numbers together, and all the variables

-4r-18=0

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

-4r=18

r=18/-4

r=-4+1/2

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