Răspuns :
a + b = 410
a : b = 3 rest 54
a = 3b + 54
3b + 54 + b = 410
4b = 410 - 54
b = 356 : 4
b = 89
a = 3 * 89 + 54
a = 321
a : b = 3 rest 54
a = 3b + 54
3b + 54 + b = 410
4b = 410 - 54
b = 356 : 4
b = 89
a = 3 * 89 + 54
a = 321