I am analyzing the below op-amp circuit.
my main worry is with the R5 resistor, in absence of R5 and Vin = 10V, Vout= 2.5V(1+10kOhm/30kOhm) = 3.33V which matches exactly with LTspice,
but with R5 in place the voltage at inverting and noninverting is the same and current through R5 is 0 hence...