Răspuns :
a+b+c=246
b=3*a
c=b+36 => c=3*a+36
a+3*a+3*a+36=246
7*a=246-36
7*a=210
a=210:7
a=30
b=3*a
b=3*30
b=90
c=3*a+36
c=3*30+36
c=90+36
c=126
b=3*a
c=b+36 => c=3*a+36
a+3*a+3*a+36=246
7*a=246-36
7*a=210
a=210:7
a=30
b=3*a
b=3*30
b=90
c=3*a+36
c=3*30+36
c=90+36
c=126