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17 May, 16:40

Which of the following ordered pairs are solutions to the system of equations below?

s 4x + 4y = - 9

y = 2x - 13

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Answers (1)
  1. 17 May, 19:44
    0
    x = 43/12

    y = - 35/6

    Step-by-step explanation:

    4x + 4y = - 9

    y = 2x - 13

    4x + 4 (2x - 13) = - 9

    4x + 8x - 52 = - 9

    12x = 52 - 9

    12x = 43

    x = 43/12

    y = 2*43/12 - 13

    y = 86/12 - ¹²⁾13

    y = (86 - 156) / 12

    y = - 70/12

    y = - 35/6
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