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e bun cum am facut ? dau coroana cine imi da corect raspunsul . 18 grade 30'+ 45grade320'=63grade350' si 15grade28'30" ori 4 = 60grade112'120"

Răspuns :

18° 30'+45°320'= 18°30' +50°20'= 68°50'
18°30'+45°320'=63°350'=68°50'
15°28'30'' *4=60°112'120''=60°114'=61°54'
Da , e bine, si daca vrei transformarile,  60' se transforma intr-un grad (1°)  si 60'' intr-un minut (1') .