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6 October, 20:51

3x/5 х^2 - 40 х + 60 and

17 / - 7 х^2 + 56 х + 84

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Answers (1)
  1. 6 October, 23:33
    0
    Step-by-step explanation:

    2,5 - 3 х = 3 (х - 2,5) - 2;

    2,5 - 3x = 3x - 7,5 - 2;

    6 х = 12;

    х = 2;

    2) 17 (2 - 3 х) - 5 (х + 12) = 8 (1 - 7 х) - 34.

    34 - 51 х - 5 х - 60 = 8 - 56 х - 34;

    0 • х = 0;
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