Question: need help with this question Show that for all sets A,B and C, (a) A(BC)=(AB)(AC); (b) If AB, then BcAc

need help with this question
need help with this question Show that for all sets A,B and

Show that for all sets A,B and C, (a) A(BC)=(AB)(AC); (b) If AB, then BcAc

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