Răspuns :
a+b+c=300
a=b:4=>b=4a
c=a+b
c+c=300
c=300:2=150
a+4a+150=300
5a=300-150
a=150:5
a=30
b=4x30=120
a=b:4=>b=4a
c=a+b
c+c=300
c=300:2=150
a+4a+150=300
5a=300-150
a=150:5
a=30
b=4x30=120