How are social equality and social justice related?

Justice is a historical category, the understanding of which depends on the prevailing level of development of production, the distribution of material conditions of production and the goods and services produced by society, as well as on the norms of morality, morality and law generally accepted in a particular society and at certain stages of its development.
It is socially fair to recognize the provision of work for every able-bodied person, receiving decent wages, social security for the disabled, children without parents, free access of citizens of the country to education, health care, sports, and culture.

Remember: The process of learning a person lasts a lifetime. The value of the same knowledge for different people may be different, it is determined by their individual characteristics and needs. Therefore, knowledge is always needed at any age and position.