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16 March, 16:42

2x+y=3 - 4x-4y=-8 using elimination?

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  1. 16 March, 16:45
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    2x + 1y = 3 ⇒ 8x + 4y = 12

    -4x - 4y = - 8 ⇒ - 4x - 4y = - 8

    4x = 4

    4 4

    x = 1

    2x + y = 3

    2 (1) + y = 3

    2 + y = 3

    - 2 - 2

    y = 1

    (x, y) = (1, 1)
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