Răspuns :
18638-328= 18310
18638-327= 18311
18638-326= 18312
18638-325= 18313
18638-324= 18314
Proba:
18638-18310= 328
18638-18311= 327
18638-18312= 326
18638-18313= 325
18638-18314= 324
18638-327= 18311
18638-326= 18312
18638-325= 18313
18638-324= 18314
Proba:
18638-18310= 328
18638-18311= 327
18638-18312= 326
18638-18313= 325
18638-18314= 324