Răspuns :
a - b = 398
a : b = 18 rest 7
a = 18b + 7
18b + 7 - b = 398
17b = 398 - 7
b = 391 : 17
b = 23
a = 18 * 23 + 7
a = 421
a : b = 18 rest 7
a = 18b + 7
18b + 7 - b = 398
17b = 398 - 7
b = 391 : 17
b = 23
a = 18 * 23 + 7
a = 421
x-y=398 x:y=18rest7 x-23=398 x=398=+23 x=421
x=(18y+7)-y=398
17y+7=398
17y=398-7 proba o faci tu da ii buna
17y=391
y=391:17
y=23
x=(18y+7)-y=398
17y+7=398
17y=398-7 proba o faci tu da ii buna
17y=391
y=391:17
y=23