Kimia

Pertanyaan

selesaikan soal-soal berikut dengan benar!
1. 1/3 : 4/5
2. 2/7 : 3/4
3. 4/5 : 3/10
4. 6/7 : 4/5
5. 2/5 : 7/10
6.4/13 : 12/13
7. 16/17 : 1 3/17
8. 2 16/19 :9/19
9. 8/9 : 2 1/2
10. 1 2/3 : 2 1/2

2 Jawaban

  • 1. 1/3 : 4/5. (disamakan dlu penyebutnya )
    5/15 : 12/15
    trs dibalik 5/15 x 15/12 (12 nya dicoret)
    = 5 x 15 = 75
    2. 2/7 : 3/4
    4/14 : 6/14
    4/14 x. 14/6. (14nya dicoret)
    4x6 = 24
    3. 4/5 : 3/10
    8/10 : 3/10
    8/10 x 10/3. (10nya dicoret)
    8x3 = 24
    4. 6/7 : 4/5
    30/35 : 28/35
    30/35 x 35/28 (28nya dicoret)
    30x28 = 840
  • 1. 1/3 :4/5 = 5/12
    2. 2/7 : 3/4 =8/28 =>2/7
    3. 4/5 :3/10 = 40/15 => 8/3
    4. 6/7 : 4/5 =30/28
    5. 2/5 : 7/10 = 20/35 =>4/7
    6. 4/13 : 12/13 = 52/156
    7. 16/17 :1 3/17 =16/17 : 20/17 =272/340
    8. 2 16/19 :9/19 =55/19 : 9/19 =1045/171
    9. 8/9 : 2 1/2= 8/9 :5/2 =16/45
    10. 1 2/3 : 2 1/2 = 5/3 : 5/2 = 10/15

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