39grade 30* +7grade : 2 - 15 grade 30*
nu am gasit butonul de grade srry
<3 <3 <3 <3


Răspuns :

39°30' + 7° : 2 - 15°30' =

39°30' + 6°60' : 2 - 15°30' =

39°30' + 3°30' - 15°30' =

42°60' - 15°30' =

27°30'