Question

Efectuati: 0,5:2+(5 supra 12 -1 supra 15) •0,(4
Va rog rezolvare completa :)

Answer 1

 0,5:2+(5/12 -1/15) •0,(4)=
=0,25+(25-4)/60 •4/9=
=25/100+21/60 •4/9=
=1/4+7/15 •1/3=
=1/4+7/45=
=(45+28)/180=
=73/180=
=0,40(5)