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3.4=r+8.5/3
We move all terms to the left:
3.4-(r+8.5/3)=0
We add all the numbers together, and all the variables
-(+r+8.5/3)+3.4=0
We get rid of parentheses
-r+3.4-8.5/3=0
We multiply all the terms by the denominator
-r*3-8.5+(3.4)*3=0
We add all the numbers together, and all the variables
-r*3+1.7=0
Wy multiply elements
-3r+1.7=0
We move all terms containing r to the left, all other terms to the right
-3r=-1.7
r=-1.7/-3
r=1/1.7647058823529
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