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

A = 1, B = 0, C = 0

1 - (0-0) = (1-0) - 0
1 - 0 = 1 - 0
1 = 1

A = 0, B = 1, C = 0

0 - (1-0)=(0-1)-0
0-1=-1-0
-1 = -1

A=0, B = 0, c= 1

0-(0-1)=(0-0)-1
0-1=0-1
-1= -1

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