How does this simplification misrepresent what takes place during the process of photosynthesis

Chemical reaction equations, such as the one for photosynthesis, show the reactants and products of a reaction. How does this simplification misrepresent what takes place during the process of photosynthesis? ... It does not show where in a cell photosynthesis occurs

The proton has a positive charge while the neutron has no charge they both make up the nucleus of the atom while the elections have a negative charge and surround the nucleus of the atom. the protons and electrons are used to calculate the atom's mass whereas the neutrons don't affect the mass