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15 June, 03:42

Determine whether (-7, 2) is a solution to the system:

2x + 5y = - 4

3x - y = 11

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Answers (1)
  1. 15 June, 06:42
    0
    X = - 7

    y = 2

    2 x (-7) + 5 x 2 = - 4

    3 x (-7) - 2 = 11

    -14 + 10 = - 4

    -21 - 2 = 11

    -4 = - 4 (yes)

    -23 = 11 (no)

    Answer: (-7, 2) is not a solution
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