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29 April, 11:55

1. 2x - 3y = - 6

2. 8x + 4y = - 56

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Answers (2)
  1. 29 April, 13:55
    0
    Step-by-step explanation:

    2x - 3y = - 6 ... (1)

    8x + 4y = - 56 ... (2) multiply equation (1) all through by 4

    8x - 12y = - 24 ... (3)

    Subtract eq (3) from (3)

    8x + 4y - (8x - 12y) = - 56 - (-24)

    8x + 4y - 8x + 12y = - 32

    8x cancels out

    4y + 12y = - 32

    16y = - 32

    y = -2

    Substitute y = - 2 in eq (1)

    2x - 3 (-2) = - 6

    2X + 6 = - 6

    2x = -6-6

    2x = - 12

    x = -6

    Therefore, x = - 6, y = - 2.
  2. 29 April, 14:44
    0
    Step-by-step explanation:

    [tex]let / / 2x - 3y = - 6 / : / : / : / : / : eq. 1/ / 8x + 4y = - 56 / : / : / : / : / : eq. 2 / / now / : / / eq. 1 / times 4 - eq. 2 / / the / : we / : get / / - 16y = 32 / / y = - / frac{16}{8} = -2 / / and / : / / x = - 6
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