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8 November, 14:42

Solve the system using elimination.

y - x = 13

7y + x = 11

(-10, 16)

(-10, 3)

(3, 16)

(-3, - 10)

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Answers (1)
  1. 8 November, 17:50
    0
    (-10, 3)

    Step-by-step explanation:

    Y - X = 13

    7Y + X = 11

    (Y+7Y) + (-X+X) = 13+11

    8Y = 24

    Y = 3

    Solving for X:

    Y - X = 13

    Substitute Y=3

    3 - X = 13

    -X = 13-3

    -X = 10

    Multiply by - 1,

    X = - 10

    (-10, 3)
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