Matematika

Pertanyaan

tentukan himpunan penyelesaian spldv 2y=10-3x
9x= 43+7y

1 Jawaban

  • 2y = 10 - 3x
    2y - 10 = - 3x
    - 3x - 2y = - 10
    3x + 2y = 10

    9x = 43 + 7y
    9x - 43 = 7y
    7y - 9x = - 43
    - 9x + 7y = - 43

    3x + 2y = 10|× 7
    - 9x + 7y = - 43|× 2

    21x + 14y = 70
    - 18x + 14y = - 86
    _____________—
    39x = 156
    x = 4

    3x + 2y = 10
    12 + 2y = 10
    2y = 10 - 12
    2y = - 2
    y = - 1

    Maaf Kalau Salah

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