Răspuns :
a+b+c= 1856
a+b= 1330
b+c= 1256
⇔
c+1330= 1856 ⇒ c=1856-1330= 526 l
a= 1856-1256 = 600 l
b = 1330 - a = 1330-600 = 730 l
a+b= 1330
b+c= 1256
⇔
c+1330= 1856 ⇒ c=1856-1330= 526 l
a= 1856-1256 = 600 l
b = 1330 - a = 1330-600 = 730 l