Matematika

Pertanyaan

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tolong bantuin yaaaa plissss

1 Jawaban

  • 1. C karena a + 3 = 59 + 3 = 62
    a + 3 + 2a = 180
    a + 2a = 180 - 3
    3a = 177
    a = 177/3
    a = 59

    2. B karena , 3x + 5 = 3(9) + 5 = 32
    6x + 4 + 3x + 5 = 90
    6x + 3x = 90 - 4 - 5
    9x = 81
    x = 81/9
    x = 9
    maaf sampe nomer