8r-9r-r=3

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Solution for 8r-9r-r=3 equation: 



8r-9r-r=3

We move all terms to the left:

8r-9r-r-(3)=0

We add all the numbers together, and all the variables

-2r-3=0

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

-2r=3

r=3/-2

r=-1+1/2

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