Răspuns :
a+b+c=80
a=5b
c=(a+b)/3 =>c=(5b+b)/3 =>c=2b
5b+b+2b=80
8b=80 =>b=10
a=50
c=20
a=5b
c=(a+b)/3 =>c=(5b+b)/3 =>c=2b
5b+b+2b=80
8b=80 =>b=10
a=50
c=20
a=5b
c=(5b+b):3=2b
5b+2b+b=80
b=80:8
b=10 bomboane
a=10x5=50 bomboane
c=(10+50):3=20 bomboane
c=(5b+b):3=2b
5b+2b+b=80
b=80:8
b=10 bomboane
a=10x5=50 bomboane
c=(10+50):3=20 bomboane