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19 January, 05:40

Solve the following system of equations. - 3x-2y=1. - 4x+9y=-22

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Answers (1)
  1. 19 January, 05:49
    0
    -3x-2y=1

    -4x+9y=-22

    -3x-2y=1

    -3x=2y+1

    x = (2y+1)

    -3

    -4x+9y=-22

    -4 (2y+1) + 9y=-22

    (-3)

    (-8y+1) + 9y=-22

    -3

    (-8y+1) + (-27y) = + 66

    -35y+1 = 66

    -35y = 65

    y = - 13/7 or - 1.85714

    -3x-2y=1

    -3x-2 (-13) = 1

    7

    -3x + (26) = 1

    7

    -3x=1 - (26)

    7

    -21x = 7-26

    -21x=19

    x = - 19 or 0.90476

    21

    So sorry about the delay.
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