In a container with volume 1 litre

are placed 2.2 moles of substance A2B and 0.4 moles of substance B2. The system at 750 ° C reaches equilibrium:
2A2B = 2A2 + B2
equilibrium gas pressure is 2.29 atm. Calculate Kc and Kp and show how the increase in pressure affects this system.

Will you please check the numbers. I think you may have copied the problem incorrectly.