This question is somewhat modified from the original which was asked by someone else. Note that there is more to this than meets the eye. The OP07 or OP070xxx is a 30+ year old op amp, the transistor is PNP (valid but unusual) and the transistor is driven in a way which must saturate any normal device AND has 10x as much base current as collector current. join the dots and see if the real question can be adduced for a beginner who does not realise the unusualness of what they have got:
I have 5v coming in on two resistor going into a transistor.
Second problem 3 voltages coming into a op amp whats the voltage at the nodes, do I add them? I'm having some problem figuring out these two circuits.