In balancing a chemical equation why can you change the coefficients but not the subscripts

Because if you change the subscripts you can change the whole equestion and can get the wrong balance therefore instead of change subscripts you supports to change the coefficients and coefficients is an among of the rule in balance of chemical equestion.

The atomic nucleus made up from protons (yellow) and neutrons (blue) and held together by nuclear forces. nuclear forces (also known as nuclear interactions or strong forces) are the forces that act between two or more nucleons. they bind protons and neutrons (“nucleons”) into atomic