Matematika

Pertanyaan

Kerjakan soal-soal berikut.
1. 4 1/2 x 1/2 - 1/2=...
2. 4/5 x 3/5 + 2/7=...
3. 1 2/9 x (3/5 + 2/3)=...
4. 2 4/9 x (6/7-1/8)=...
5. 4/7 : 3/5 + 6/5 x 2/9=...

1 Jawaban

  • 1) 4 1/2 x 1/2 - 1/2
    = 2 x 1/2 - 1/2
    = 1 - 1/2
    = 1/2

    2) 4/5 x 3/5 + 2/7
    = 12/25 + 2/7
    = 134/175

    3) 1 2/9 x (3/5 + 2/3)
    = 2/9 x 19/15
    = 38/135

    4) 2 4/9 x (6/7 - 1/8)
    = 2 x 4/9 x 41/56
    = 4/9 x 41/28
    = 1/9 x 41/7
    = 41/63

    5) 4/7 : 3/5 + 6/5 x 2/9
    = 4/7 x 5/3 + 2/5 x 2/3
    = 20/21 + 4/15
    = 128/105

    Smga Membantu >.<

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