Răspuns :

Crys157724id

a + b = 2345

a : b = 3 rest 105 => a = 3b + 105

3b + 105 + b = 2345

4b = 2345 - 105

4b = 2240

b = 2240 : 4

b = 560

a = 560 × 3 + 105

a = 1785

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