Răspuns :
a+b=79
a:b=2 rest 19
a=2b+19
2b+19+b=79
3b+19=79
3b=79-19
3b=60
b=60:3
b=20
a=2*20+19
a=40+19
a=59
a:b=2 rest 19
a=2b+19
2b+19+b=79
3b+19=79
3b=79-19
3b=60
b=60:3
b=20
a=2*20+19
a=40+19
a=59