1. The problem statement, all variables and given/known data This is a sample problem. I'm trying to figure it out before I do the actual homework. The issue is, the way to figure it out is not included in our notes. I'm absolutely lost (math isn't my strong point) I've also included my attempt at how I think it should be done below, which got my really close. We're rounding to the nearest whole number, but I'm still off by 2. If it's hard to see: R1 = 2900 ohms, R3 = 800 ohms, Req = 3490 ohms. Find R2 in ohms. 2. Relevant equations The only equations given to us for equivalent resistance in series-parallel is GT = G1 + G2 and Rx = 1/GT which is really not helping to figure this out. 3. The attempt at a solution Here's my attempt. I subtracted R1 from RT (590 or .001694915) and divided by 1. Then subtracted R3 (.00125) from that (.000444915). Divided by 1 and got within 2 of the answer after rounding (2248). I'm so lost on this.