Calculati Va rog ex9! am mare nevoie,e urgent! Mersi anticipat!❤❤

9)a) 39°24' + 25°43' =65°7'
b) 67°18° + 15°24' =82°42'
c) 51°40' - 27°33' =24°7'
d) 120° - 116°52' =3°8'