Răspuns :
a+b=312
a:b=2:rest 12=>a=2b+12
2b+12+b=312=>3b=312-12=300=>b=100.
a=2 x 100+12=>a=212
a:b=2:rest 12=>a=2b+12
2b+12+b=312=>3b=312-12=300=>b=100.
a=2 x 100+12=>a=212