va rog frumos =) =) =) =)) =)))
![Va Rog Frumos class=](https://ro-static.z-dn.net/files/d73/b617febd9c64f34ff22e3143539c595a.jpg)
a)4-0,31=3,69
b)[13,4+0,5-(147,8-125)]×10-13,41=
=(13,9-22,8)×10-13,41=
=-8,9×10-13,41=
=-89-13,41=
= 102,41