1. The document discusses the concepts of equity and solidarity. It defines equity as the equal distribution of duties and rights among citizens, and solidarity as mutual help among members of society. 2. It states that equity and solidarity mainly affect economic matters. In Spain, taxes are used to fund state expenses and services that benefit all citizens, helping to compensate economic differences. 3. The revenue from taxes pays for facilities and services like public libraries, hospitals, and schools that benefit everyone in society and help equalize economic conditions.