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1.2r+6.5=2.9
We move all terms to the left:
1.2r+6.5-(2.9)=0
We add all the numbers together, and all the variables
1.2r+3.6=0
We move all terms containing r to the left, all other terms to the right
1.2r=-3.6
r=-3.6/1.2
r=-3+4.4408920985006E-16/1.2
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