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.2(O-8)=0.3O+5-3+0.3O
We move all terms to the left:
.2(O-8)-(0.3O+5-3+0.3O)=0
We add all the numbers together, and all the variables
.2(O-8)-(0.6O+2)=0
We multiply parentheses
0.2O-(0.6O+2)-1.6=0
We get rid of parentheses
0.2O-0.6O-2-1.6=0
We add all the numbers together, and all the variables
-0.4O-3.6=0
We move all terms containing O to the left, all other terms to the right
-0.4O=3.6
O=3.6/-0.4
O=-9
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