Matematika

Pertanyaan

1) 1 1/2 × 2 2/3 × 3 3/4
2) 1 1/2 ÷ 2 2/3 ÷ 3 3/4
3) 2 2/3 ÷ 4/9 × 1 6/9
4) 1 2/3 ÷ 2 1/2 - 3/5 × 1 2/7
Pke cara yah.. mksh:)

2 Jawaban

  • 1) 1 1/2 × 2 2/3 × 3 3/4
    = 3/2×8/3×15/4
    = 360/24
    = 15

    2) 1 1/2 ÷ 2 2/3 ÷ 3 3/4
    = 3/2÷8/3÷15/4
    = 3/2×3/8×4/15
    = 36/240
    = 3/20

    3) 2 2/3÷4/9×1 6/9
    = 8/3×9/4 ×15/9
    = 1.080/108
    = 10

    4) 1 2/3÷2 1/2 – 3/5×1 2/7
    = 5/3÷5/2 – 3/5×9/7
    = 5/3×2/5 – 3/5×9/7
    = 2/3 – 27/35
    = 35/105 – 81/105
    = –46/105
  • 1)3/2x8/3x15/4= 30/2 =15
    2) 3/2 ÷ 8/3×15/4=3/2×3/8×15/4 =135/64= 2 7/64
    3) 8/3÷4/9×15/9=8/3×9/4×15/9 =10
    4)5/3 ÷5/2 - 3/5×9/7 = 5/3×2/5-3/5×9/7= 2/3-27/35= 70/105- 81/105 = - 11/105

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