Answers

2015-07-13T20:55:21+05:30
(A)  XXY=XX

6/5*6/5*3/7=6/5*6/5
108/175=36/25
3/7=1
3=7

(B)  XX(YXZ)=(XXY)XZ

6/5*6/5(3/7*6/5*1/3)=(108/175)6/15
36/25*18/105=108/175*6/15
648/2625=648/2625
1=1

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