Îmi poate spune cineva rezultatul operației: 65×13-{ [ (35x42-23x51)-72x3]x25-(72×29-12x15x3)+92×4 } =
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Explicație pas cu pas:
65 × 13 - {[(35 × 42 - 23 × 51) - 72 × 3] × 25 - (72 × 29 - 12 × 15 × 3) + 92 × 4} =
845 - {[(35 × 42 - 23 × 51) - 72 × 3] × 25 - (72 × 29 - 12 × 15 × 3) + 92 × 4} =
845 - {[(1470 - 23 × 51) - 72 × 3] × 25 - (72 × 29 - 12 × 15 × 3) + 92 × 4} =
845 - {[(1470 - 1173) - 72 × 3] × 25 - (72 × 29 - 12 × 15 × 3) + 92 × 4} =
845 - {[(1470 - 1173) - 216] × 25 - (72 × 29 - 12 × 15 × 3) + 92 × 4} =
845 - [(297 - 216) × 25 - (72 × 29 - 12 × 15 × 3) + 92 × 4] =
845 - [81 × 25 - (72 × 29 - 12 × 15 × 3) + 92 × 4] =
845 - [81 × 25 - (2088 - 12 × 15 × 3) + 92 × 4] =
845 - [81 × 25 - (2088 - 180 × 3) + 92 × 4] =
845 - [81 × 25 - (2088 - 540) + 92 × 4] =
845 - (81 × 25 - 1548 + 92 × 4) =
845 - (2025 - 1548 + 92 × 4) =
845 - (2025 - 1548 + 368) =
845 - (477 + 368) =
845 - 845 = 0