Matematika

Pertanyaan

*PERSAMAAN DAN PERTIDAKSAMAAN*


1. 4x - 7 = -6
2. 12 -5x = 10
3. 2x - 7 = 8 - 3x
4. 6 - 3a = 4a - 8

PAKAI CARRA DIPERLUKAN CEPAT

1 Jawaban

  • no.1
    4x - 7 = -6
    4x = -6 + 7
    4x = 1
    x = 1/4

    no.2
    12 - 5x = 10
    -5x = 10-12
    -5x = -2
    5x = 2
    x = 2/5

    no.3
    2x - 7 = 8 - 3x
    2x + 3x = 8 + 7
    5x = 15
    x = 3

    no.4
    6 - 3a = 4a - 8
    -3a - 4a = -8 -6
    -7a = -14
    a = -14/-7
    a = 2

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