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4 April, 05:30

Solve the system using substitution.

X+Y=8

Y=3X

A. (4,12)

B. (2,6)

C. (1/2, 3/2)

D. (-4,-12)

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Answers (1)
  1. 4 April, 07:01
    0
    X + Y = 8

    Y = 3X

    X + Y (3X) = 8

    X + 3X = 8

    4X = 8

    X = 2

    X (2) + Y = 8

    2 + Y = 8

    -2 - 2

    Y = 6

    Answer:

    B. (2,6)
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