Am notat: a= rosii; b=ardei; c=castraveti
a+b+c=785kg
a+b=509kg
b+c=388kg
Adun aceste ultime 2 ecuatii si obtin : a+2b+c=509+388
a+2b+c=897 (*)
Dar cum: a+b+c=785(**)
Scad ecuatia (*) si (**) si obtin:
a+2b+c-a-b-c=897-785
b=112 kg
a+b=509=> a = 509-b=509-112=397 => a=397 kg
b+c=388=>c=388-b=388-112=276 => c=276kg
Raspuns: a=rosii = 397kg
b= ardei=112kg
c= castraveti=276kg
