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2014-09-24T16:06:41+03:00
A) 180-90-36=54
b)180-90-45=45
c)180-90-27 grade 17 min= 89 grade 60 min-27 grade 17min=62grade si 43min
d)180-90-17 grade 34min 30 sec= 89grade 59 min 60sec-17grade 34min 30sec = 
=72 grade 24min 30 sec
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