1 7/20: 2 6/15=
Tolong di jawab kak butuh cepat​

1. 16 ÷ 6 4/7

16/1 ÷ (7×6+4)

16/1 ÷ 46/7

16/1 × 7/46

16×7/1×46

112÷2/46÷2

56/23

2. 14/16 ÷ 8 2/5

14/16 ÷ (5×8+2)

14/16 ÷ 42/5

14/16 × 5/42

14×5/16×42

70÷7/672÷7

10÷2/96÷2

5/48

3. 9/11 ÷ 3 6/13

9/11 ÷ (13×3+6)

9/11 ÷ 45/13

9/11 × 13/45

9×13/11×45

117÷9/495÷9

13/55

4. 6/14 ÷ 2 4/7

6/14 ÷ (7×2+4)

6/14 ÷ 18/7

6/14 × 7/18

6×7/14×18

42÷7/252÷7

6÷6/36÷6

1/6

5. 1 7/20 ÷ 2 6/15

(20×1+7) ÷ (15×2+6)

27/20 ÷ 36/15

27/20 × 15/36

27×15/20×36

405÷9/720÷9

45÷5/80÷5

9/16

6. 5 4/8 ÷ 2 9/12

(8×5+4) ÷ (12×2+9)

44/8 ÷ 33/12

44/8 × 12/33

44×12/8×33

528÷8/264÷8

66÷3/33÷3

22/11

7. 4 1/11 ÷ 4 8/13

(11×4+1) ÷ (13×4+8)

45/11 ÷ 60/13

45/11 × 13/60

45×13/11×60

585÷5/660÷5

117÷3/132÷3

39/44

8. 5 1/4 ÷ 4 3/6

(4×5+1) ÷ (6×4+3)

21/4 ÷ 27/6

21/4 × 6/27

21×6/4×27

126÷9/108÷9

14÷2/12÷2

7/6

9. 6 7/8 ÷ 5 3/6

(8×6+7) ÷ (6×5+3)

55/8 ÷ 33/6

55/8 × 6/33

55×6/8×33

330÷6/264÷6

55/44

10. 1 1/2 ÷ 1 3/5 ÷ 3 3/4

(2×1+1) ÷ (5×1+3) ÷ (4×3+3)

3/2 ÷ 8/5 ÷ 15/4

3/2 × 5/8 × 4/15

3×5×4/2×8×15

60÷10/240÷10

6÷6/24÷6

1/4

11. 2 1/3 ÷ 1 4/6 ÷ 1 8/14

(3×2+1) ÷ (6×1+4) ÷ (14×1+8)

7/3 ÷ 10/6 ÷ 22/14

7/3 × 6/10 × 14/22

7×6×14/3×10×22

588÷6/660÷6

98÷2/110÷2

49/55

12. 2 2/8 ÷ 2 4/6 ÷ 1 9/12

(8×2+2) ÷ (6×2+4) ÷ (12×1+9)

18/8 ÷ 16/6 ÷ 21/12

18/8 × 6/16 × 12/21

18×6×12/8×16×21

1.296÷8/2.688÷8

162÷6/336÷6

27/56

12,8 : 0,04 + 6,25 - 132,9 = 193,35

Tergantung besar kecilnya bilangan tersebut.. 
contoh : a= -1000
b= -5000 
maka bilangan yang lebih kecil adalah bilangan a karna jika bilangan tersebut negatif maka semakin kecil bilangan tersebut maka semakin besar nilainya