apt-get install pgadmin3
Reading package lists... Done
Building dependency tree
Reading state information... Done
You might want to run 'apt-get -f install' to correct these:
The following packages have unmet dependencies:
 mysql-server : Depends: mysql-server-5.7 but it is not going to be installed
 pgadmin3 : Depends: pgadmin3-data (= 1.22.0-1) but it is not going to be installed
            Depends: libwxbase3.0-0v5 (>= 3.0.2+dfsg) but it is not going to be installed
            Depends: libwxgtk3.0-0v5 (>= 3.0.2+dfsg) but it is not going to be installed
            Recommends: pgagent but it is not going to be installed
E: Unmet dependencies. Try 'apt-get -f install' with no packages (or specify a solution).