Răspuns :
a+b+c=100
b =2a
c =3a+10
a + 2a + 3a+10 =100
6a =100-10
6a =90
a =15
b =2a
b =2*15 =30
c =3*15+10
c =45+10 =55
verif ; 15+30+55 =100
b =2a
c =3a+10
a + 2a + 3a+10 =100
6a =100-10
6a =90
a =15
b =2a
b =2*15 =30
c =3*15+10
c =45+10 =55
verif ; 15+30+55 =100