Solution (source code)

= Solution

<ammonia> and <cyclohexylamine> are neutral donors, whereas each coordinated <chloride> and <acetate> has charge $-1$. Charge balance therefore gives \b[Pt(II) in <cisplatin> and Pt(IV) in <satraplatin>]:
$$
x_{\rm cisplatin}-2=0,\qquad x_{\rm satraplatin}-2-2=0.
$$
The two <acetate> groups count once each; their carbonyl and alkoxy <oxygen> atoms do not make each ligand doubly charged.