1. The problem statement, all variables and given/known data 1-2+3=2: a) 1-2=-1, -1+3=2 or b) -2+3=1, 1+1=2 So you can attack this expression from either side and you still get 2. My question is : If I had to remove logs from lnP= 1/2ln(Q+1)- 3lnR+ 2 I'd either get P=[(Q+1)^1/2]/(R3* e^2) or P=[[(Q+1)^1/2]* e^2]/R^3 depending on which operation( taking the difference or adding) I'd choose to do first. Which one is more correct and why does the answer depend on what(subtracting or addition) I do first? In case of 1-2+3=2 it doesn't. Where is my logic going all illogical? Thanks.