Diode Circuit find voltage
If you assume no current flow out of the terminal then it becomes trivial:

Given ID2 = 1.33mA then using ohms law voltage on the 5k resistor must be 5000*0.00133 = 6.65 V
If one end of the resistor is at +10V then the other end must be at 10-6.65 = 3.35 V

For non-ideal parts and a load current run a DC sweep simulation of this with a varying value for R3.







simulate this circuit &ndash; Schematic created using CircuitLab