The equation for photosynthesis is: 6CO2+6H2O→C6H12O6+6O26CO2+6H2O\rightarrow C6H12O6+6O26CO2+6H2O→C6H12O6+6O2. This means that six molecules of carbon dioxide and six molecules of water react in the presence of sunlight to produce one molecule of glucose and six molecules of oxygen