Răspuns :
A) 339, V(verificare ) :593-339= 254
221, V: 484-221=263
B) 246, V: 395-246=149
448, V: 687-448=239
C)507, V: 863-501=356
221, V: 484-221=263
B) 246, V: 395-246=149
448, V: 687-448=239
C)507, V: 863-501=356
593-254=339
484-263=221
b) 395-149=246
687-239=448
c)863-356=507