Răspuns :
a+b=77
a:b=4 si rest 12 => a=4b+12
inlocuim in relatie
4b+12+b=77
5b+12=77
5b=77-12
5b=65
b=65:5
b=13
a=13*4+12
a=52+12
a=64
a+b=77
a:b=4 si rest 12 => a=4b+12
inlocuim in relatie
4b+12+b=77
5b+12=77
5b=77-12
5b=65
b=65:5
b=13
a=13*4+12
a=52+12
a=64
verificare:
64+13=77
64:13=4 rest 12