Equations That Are Hard Balance

 You know how to balance chemical equations?
Do you think it is easy?

But can you do these ones?

https://docs.google.com/presentation/d/1VRcXPekMnpRW0J_Y5H_jGI-zipI_r9qv/edit?usp=drive_link&ouid=105880275394476122937&rtpof=true&sd=true