Equality also means Equivalence, Sameness, Balance, Equilibrium, Similarity. Make it easy, equality means state of being equal (kesamaan).
This is equal...
For more brief, I'll give you a situation. If you are a mother and you have two children. You give the first child Rm1 and how much will you give to the second child for being equal? It is also Rm1 right? So, the first child got RM1 and the second child also got RM1. It is 'equal'.
But. what about fairness? The above situation isn't about fair? Actually, fairness is more complicated.
Equality can be Fairness but Fairness not necessarily Equality
Fairness is a quality of being just (keadilan)
Fairness is put something at the right place.
I'll give you another situation.
"You are a husband and a father. You have two wives. The first wife had 6 children and the second wife had 2 children. How to be 'fair' in term of home or shelter?"
As a conclusion, The first wife must has a bigger home for them than the second wife because the first wife had 6 children but the second wife only with 2 children. It is 'fair'.
For more example, you feed your first wife with side dish anchovies. But, your second wife is allergic towards anchovies. So, you have to give her other food or meal like chicken or shrimp or anything else. It is Fair. I remind you again that Fairness is put something at the right place.
Is it clear, readers...?