Matematika

Pertanyaan

1. 2x + 4 = 8

2. 2x - 6 = - 5

3. 9x + 4 = 3x + 22

4. 12 + 4 (2k - 1) = 6 (k + 2)

D jwb ny pke cara ya..(^_^)

1 Jawaban

  • Materi : Persamaan Linear Satu Variabel

    1. [][][]
    》2x + 4 = 8
    》2x = 8 - 4
    》2x = 4
    》x = 4/2
    》x = 2

    2. [][][]
    》2x - 6 = -5
    》2x = -5 + 6
    》2x = 1
    》x = 1/2

    3. [][][]
    》9x + 4 = 3x + 22
    》9x - 3x = 22 - 4
    》6x = 18
    》x = 18/6
    》x = 3

    4. [][][]
    》12 + 4(2k - 1) = 6(k + 2)
    》12 + 8k - 4 =6k + 12
    》8k - 6k = 12 - 12 + 4
    》2k = 4
    》k = 4/2
    》k = 2

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