2r=8r-9

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Solution for 2r=8r-9 equation:



2r=8r-9
We move all terms to the left:
2r-(8r-9)=0
We get rid of parentheses
2r-8r+9=0
We add all the numbers together, and all the variables
-6r+9=0
We move all terms containing r to the left, all other terms to the right
-6r=-9
r=-9/-6
r=1+1/2

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