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12 July, 12:41

Solve the system by adding or subtracting x - 2y = - 13 5 x + 2y = - 17

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Answers (2)
  1. 12 July, 14:22
    0
    use the combination method

    Step-by-step explanation:

    x - 2y = - 13

    + 5 x + 2y = - 17

    since 2y is in both equations you cancel them out.

    5x + x = 6x

    -2y + 2y = 0

    -13 + (-17) = - 30

    put it back into the equation

    6x + 0 = - 30 or 6x = - 30

    6x : 6 = x

    -30 : 6 = - 5

    x = - 5

    then plug into the equation x - 2y = - 13 and 5x + 2y = - 17

    -5 - 2y = - 13

    -13 + 5 = - 8

    -2y = - 8

    y = 4

    x = - 5 and y = 4
  2. 12 July, 15:32
    0
    You subtract and find x=10
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