8.5r-3.1=0.9-9r

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Solution for 8.5r-3.1=0.9-9r equation:



8.5r-3.1=0.9-9r
We move all terms to the left:
8.5r-3.1-(0.9-9r)=0
We add all the numbers together, and all the variables
8.5r-(-9r+0.9)-3.1=0
We get rid of parentheses
8.5r+9r-0.9-3.1=0
We add all the numbers together, and all the variables
17.5r-4=0
We move all terms containing r to the left, all other terms to the right
17.5r=4
r=4/17.5
r=4/17.5

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