, 25 2017 . 13:59
+
Lyudmila2807
: _
. ( , , ) 15 = 32 .
7,5 , 15 = 50 .
(, , , " ").
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, 32 50 . .. 18 "": 50-32.
50\18=2,7. 2,7 , , "" 2 3 . , "" 20 , 18-.
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club.osinka.ru
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