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total area =
area moved by shreyansh = 2/7
= 7/1-2/7
l.c.m of 1 and 7 = 7
7/7 - 2/7 =5/7
total area = 10
area moved by sudhir = 9/10
=10/1 - 9/10
l.c.m of 1 and 10 = 10
10/10 - 9/10 = 1/10
total area they together have = 2/7 +1/10
l.c.m of 7, 10 = 70
2/70+1/70 = 3/70
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