Matematika

Pertanyaan

1.2z + 11 = -2
2. 8 - 4x = 6
3. 3a - 2 = -a + 18
4. 3 - x = x -3

dengan caranya !

1 Jawaban

  • 2z + 11 = -2
    2z = -2 -11
    2z = -13
    z = -13/2

    8 - 4x = 6
    -4x = 6 - 8
    -4x = -2
    x = 2

    3a - 2 = -a + 18
    3a + a = 18 + 2
    4a = 20
    a = 5

    3 - x = x - 3
    -x - x = -3 -3
    -2x = -6
    x = 3

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