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10 October, 14:35

1/2 x + 3/4 y = - 2 2/3 x + 5/6 y = - 2 Solve the system.

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  1. 10 October, 16:00
    0
    (2, - 4)

    Step-by-step explanation:

    1/2 x + 3/4 y = - 2

    2/3 x + 5/6 y = - 2

    4 (1/2 x + 3/4 y = - 2) = - 2 (2x + 3y = - 8) Multiply by - 2 to eliminate the x's

    6 (2/3 x + 5/6 y = - 2) = (4x + 5y = - 12)

    -4x - 6y = 16 combine with the 2nd equation

    -1y = 4

    y = - 4

    plug - 4 in for y to find x in either equation

    1/2x + 3/4 (-4) = -2

    1/2x - 3 = - 2

    1/2x = 1

    x = 2

    (2, - 4)
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