Give examples of three sets A, B,C for which A-(B-C)=(A-B)-C.

the square root of what number? if you add that, then someone will probably answer the question.

days of the week

step-by-step explanation:

javier earned more money then kyle, so that won't always be a constant term, but the days of the week do not change so that term is always constant.

edit: i meant