DAU COROANA!!este o poza atasata cu exercitiul

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Salut
40°+50°=90°
24°38'+17°18'=41°56'
56°43'-21°18'=35°25'
25°*4=100°
108°+72°=180°
44°30'+16°20'=60°50'
70°52'-20°12'=50°40'
30°20'*3=90°60'=91°