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3(r+1.6)=8r=9.4
We move all terms to the left:
3(r+1.6)-(8r)=0
We add all the numbers together, and all the variables
-8r+3(r+1.6)=0
We multiply parentheses
-8r+3r+4.8=0
We add all the numbers together, and all the variables
-5r+4.8=0
We move all terms containing r to the left, all other terms to the right
-5r=-4.8
r=-4.8/-5
r=2.6666666666667/2.7777777777778
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