Matematika

Pertanyaan

tentukan nilai x
1. 1/5x - 1/10 = 1/2x - 7/10
2. 1/2x - 5/12 = -1/3x + 3/2
3. x - 3/4 = 3/8x + 1/2
4. -1/2x + 7/8x = 1/4x - 5/8
tolongin donkk buat bsok niii

1 Jawaban

  • 1. 1/5x - 1/10 = 1/2x - 7/10
    1/5x - 1/2x = 1/10 - 7/10
    2/10x - 5/10x = 1/10 - 7/10
    -3/10x = -6/10
    3/10x = 6/10
    X = 6/10 x 10/3
    X = 2
    2. 1/2x - 5/12 = -1/3x + 3/2
    1/2x + 1/3x = 3/2 + 5/12
    3/6x + 2/6x = 18/12 + 5/12
    5/6x = 23/12
    X = 23/12 x 6/5
    X = 23/10 = 2,3
    3. x - 3/4 = 3/8x + 1/2
    x - 3/8x = 1/2 + 3/4
    8/8x - 3/8x = 2/4 +3/4
    5/8x = 5/4
    X = 5/4 x 8/5
    X = 2
    4. -1/2x + 7/8x = 1/4x -5/8
    -1/2x + 7/8x - 1/4x = -5/8
    -4/8x + 7/8x - 2/8x = -5/8
    1/8x = -5/8
    X = -5/8 x 8/1
    X = -5

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