Răspuns :
a + b = 487
a : b = 3 rest 3
a = 3b + 3
inlocuim in prima ecuatie
3b + 3 + b = 487
4b = 487 - 3
b = 484 : 4
b = 121
a = 3 * 121 + 3
a = 363 + 3
a = 366
a : b = 3 rest 3
a = 3b + 3
inlocuim in prima ecuatie
3b + 3 + b = 487
4b = 487 - 3
b = 484 : 4
b = 121
a = 3 * 121 + 3
a = 363 + 3
a = 366
a|---| b|---|---|---|+3. 487-3=484(4a) 484:4=121(a)
121x3+3=366(b) sau 487-121=366(b)