r + g = 178 si g + c = 133 si r + c = 141
le adunam pe toate
r + g + g + c + r + c = 178 + 133 + 141
2(r + g + c)=452
r + g + c = 226 dar r + g=178⇒178 + c = 226⇒c = 226-178 = 48 curci
r + g + c = 226 dar g + c=133⇒r +1 33 = 226⇒r = 226-133 = 93 rate
r + g + c = 226 dar r + c=141⇒141 + g = 226⇒g = 226-141 = 85 gaste
Bunica are 48 curci, 93 rate si 85 gaste!!!!