When balancing this equation there are infinite possibilities for b and c values. I got a=2, b=2, and c=2. I am not sure if this is correct and how to proceed from here to find the flame temperature.

please don't post the same answer from the other chegg post

Gaseous hydrogen and oxygen are burned at latm under rich conditions: O2 + 5H2 H20 + bH2 + CH The gases enter at 298 K. Calculate the adiabatic flame temperature and the product composition a,b and c