My son's chemistry teacher is quite a nice person, but, I'd say, a little weird . Well, it has never been too much of problem -- never before yesterday, when I went up to him for some serious talk. You know, I am quite concerned about my son's studies and all, so I have this habit of talking to his teachers. So I asked him, how he is doing, and perhaps even gave him a hint that I am quite worried about it. All that he did was to chuckle and hand me a bit of paper that read:
Balance the Following Equations: $$\text{Po+Sc+Y+Re+Rb}+\underline{\qquad}=\text{Cs+In+Db+Fe+Kr+Tl}+\underline{\qquad}\;,$$ $$\text{Al+Lu+C}=\text{Cm+Ta}+\underline{\qquad}$$ $$\text{Re+Cf}=\text{Fr+He}+\underline{\qquad}$$ $$\text{Ba+N}=\text{Sn+Er}+\underline{\qquad}.$$
I don't have the slightest idea what this might mean. Maybe you people can help me out?
Clarification:
There's not much hint on how to proceed in the prologue; it's just flavor-text.