Matematika

Pertanyaan

5x - 2y = 11
2x + 5y = 7

2x + y = 4
X - y = 2

1 Jawaban

  • Materi : SPLDV

    Bagian Pertama [][]

    5x - 2y = 11 ..... ×2
    2x + 5y = 7 ...... ×5
    ◆◆◆◆◆◆◆◆◆◆◆◆◆
    10x - 4y = 22
    10x + 25y = 25
    ◆◆◆◆◆◆◆◆◆◆◆◆[-]
    -29y = -3
    y = 3/29

    5x - 2y = 11
    5x - 2(3/29) = 11
    5x = 11 + 6/29
    5x = 319/29 + 6/29
    5x = 325/29
    145x = 325
    x = 325/145
    x = 65/29

    Hp = { 65/29 , 3/29 }

    Kedua [][]
    2x + y = 4
    x - y = 2
    ◆◆◆◆◆◆◆◆ [+]
    3x = 6
    x = 2

    x - y = 2
    2 - y = 2
    -y = 2 - 2
    y = 0

    Hp = { 2 , 0 }

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