Can you please explain how to get the answer A silver oxidez

Can you please explain how to get the answer?

A silver oxide-zic cell maintains a fairly constant voltage during discharge (1.60 V). The button form of this cell is used in watches, hearing aids, and other electronic devices. The half-reactions are Zn(s) + 20H(aq) rightarrow Zn(OH)2(s) + 2e, Ag2O(s) + H2(l) + 2e\" rightarrow 2Ag(s) + 20H-(aq) Identify the anode and the cathode reactions. What is the overall reaction in the galvanic cell? anode reaction: cathode reaction: overall reaction:

Solution

first one is anode

second one is cathode

add both to get teh overall reaction