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bunicul a cules in trei zile 710kg struguri.in primele doua zile a cules 443 kg,iar in ultimele doua zile a cules 465 kg struguri.cate kg struguri a cules in fiecare zi bunicul?

Răspuns :

a+b+c=710 Kg
a+b=443 Kg
b+c=465 Kg

443 Kg+c=710 Kg
c=710 Kg-443 Kg
c=167 Kg

b+167 Kg=465 Kg
b=465 Kg-167 Kg
b=298 Kg

a+298 Kg=443 Kg
a=443 Kg-298 Kg
a=145 Kg
a+b+c=710
a+b=443

b+c=465