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Rezolvati in N stelet : 25x x + 13 < sau egal 263

Răspuns :

25x + 13 ≤ 263
25x ≤ 263 - 13
25x ≤ 250
x ≤ 250 : 25
x ≤ 10
x = {1,2,3,4,5,6,7,8,9}