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-8.07-5.3r-6.6r=-6.5r+9.75
We move all terms to the left:
-8.07-5.3r-6.6r-(-6.5r+9.75)=0
We add all the numbers together, and all the variables
-11.9r-(-6.5r+9.75)-8.07=0
We get rid of parentheses
-11.9r+6.5r-9.75-8.07=0
We add all the numbers together, and all the variables
-5.4r-17.82=0
We move all terms containing r to the left, all other terms to the right
-5.4r=17.82
r=17.82/-5.4
r=-3+1/3.3333333333333
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