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29 September, 13:56

2x + 3y = - 2

3x - 2y = 23

+4
Answers (1)
  1. 29 September, 15:27
    0
    x = 5

    y = - 4

    Step-by-step explanation:

    Por sustitución:

    2x=-2-3y

    2x/2=-2/2-3y/2

    x=-2-3y/2

    Reemplazo x en la segunda ecuación:

    3 (-2-3y/2) - 2y=23

    -6-9y/2-2y=23

    -6-13y/2=23/2

    -6-13y=46

    -13y=52

    y=-4

    Reemplazo y en x:

    x=-2-3 (-4) / 2

    x=-5 (-4) / 2

    x=5
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