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n+ 719=10000-2392 si 999+n=8595+34045 calculeaza nr necunoscut

Răspuns :

 N + 719 = 10 000 - 2392
N = 10 000 - 2392 - 719
N = 6889
999 + n = 8595 + 34 045
n = 8595 + 34 045 - 999
n = 41 641
n+179=7608
n=7608-179
n=7429

999+n=42640
n=42640-999
n=41641