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aflati numarul necunoscut:1499+6411-c=364+1381si a+3364-4628=117389

Răspuns :

1499+6411-c=364+1381
7910-c=1745
c=7910-1745
c=6165

a+3364-4626=117389
a=117389+4626-3364
a=118651