I see what you mean, it's easier to think of it like that and have them all as a sum and go from there. Thank you for the help you just saved my test grade tomorrow!
I can't figure out how to post a picture from my phone, but the way I'm doing it now is when the current goes through the resistor, I'm taking the node on the negative end and subtracting it from the node on the positive end of the resistor
OH I think I understand it better now. So when I have the sum of currents equal to zero (KCL), the direction of the current determines which one is subtracted?
Thanks, that makes sense. Say I have I1+I2-I3=0. How do you determine if I1=(V1-V2)/12k compared to I1=(V2-V1)/12k. Does it have something do to based on the reference node?
While performing nodal analysis problems, I am always unsure of which node gets subtracted from during KCL. For example, if I have (V1-V2)/2k, how do I know that it shouldn't be (V2-V1)/2k?