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folosind producere mersului invers, afla numerele necunoscute :
n-2.108-4.325=2436


Răspuns :

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