Matematika

Pertanyaan

carilah HP dari
3x + 2y = 6
2x + 3y = -1

1 Jawaban

  • 3x + 2y = 6 |2
    2x + 3y = -1|3

    6x + 4y = 12
    6x + 9y = -3 -
    ---------------------
    0 + (-5) y = 15
    y = 15/ -5 = ( -3 )



    2x + 3y = -1
    2x + 3 (-3) =-1
    2x + (-9) = -1
    2x = -1 + 9
    2x = 8 jadi x = 8/2 =( 4 ) hp = ( 4 , -3 )

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