Matematika

Pertanyaan

SPLDV 6p + 2q = 12
3p + 5q = 15

1 Jawaban

  • 6p + 2q = 12 .....(1)
    => 3p + q = 6
    => q = 6 - 3p ......(2)

    3p + 5q = 15 .......(3)
    substitusi (2) ke (3)
    3p + 5(6 - 3p) = 15
    3p + 30 - 15p = 15
    -12p = 15 - 30
    -12p = -15
    p = -15 : (-12)
    p = 5/4

    substitusi p = 5/4 ke pers (2)
    q = 6 - 3(5/4)
    q = 6 - 15/4
    q = 24/4 - 15/4
    q = 9/4

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