1109

unde e greseala?

Teorema 4 = 3Demonstratie:Fiea + b = cDe unde4a - 3a + 4b - 3b = 4c - 3c4a + 4b - 4c = 3a + 3b - 3c4 (a + b - c) = 3 (a + b - c)4 = 3
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