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2x - y - 4 = 0

3x + y - 9 = 0

What is the solution set of the given system?

a. { (6/5, 13/5) }

b. { (13/5, 6/5) }

c. { (5, 6) }

d. { (6, 5) }

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Answers (1)
  1. 1 July, 15:25
    0
    Hello:

    2x - y - 4 = 0 ... (1)

    3x + y - 9 = 0 ... (2)

    (1) + (2) : 5x-13 = 0

    5x=13

    x=13/5

    subsct in (2) : 3 (13/5) + y-9=0

    y = 9-39/5

    y=6/5

    answer : b. { (13/5, 6/5) }
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