Răspuns :
A + B = 86
A : B = 3 REST 2
A = 3B + 2
3B + 2 + B = 86
4B = 84
B = 84 : 4
B = 21
A = 3 * 21 + 2
A = 65
A : B = 3 REST 2
A = 3B + 2
3B + 2 + B = 86
4B = 84
B = 84 : 4
B = 21
A = 3 * 21 + 2
A = 65