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folosind mersul invers afla nr necunoscut n_2108_4325=2436

Răspuns :

n-2108-4325=2436

n=2436+2108+4325

n=8869

n-2108-4325=2436
n-2108=2436+4325
n-2108=6761
n=6761+2108
n=8869