4-3r-r=9

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Solution for 4-3r-r=9 equation: 



4-3r-r=9

We move all terms to the left:

4-3r-r-(9)=0

We add all the numbers together, and all the variables

-4r-5=0

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

-4r=5

r=5/-4

r=-1+1/4

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