1) 2 4/8×7 1/5 2) 4 8/10 : 2 10/15 3) 4 1/2-2 6/12:(2 1/2+1 1/4). 4)4 1/4+3 1/5 5) 3 3/4:3 2/6:2 4/12. 6) 7-3 4/9. tolong jawab pake cara ya

1. 2 4/8 × 7 1/5

20/8 × 36/5

20×36/8×5

720÷10/40÷10

72÷4/4÷4

18/1

18

2. 4 8/10 ÷ 2 10/15

48/10 ÷ 40/15

48/10 × 15/40

48×15/10×40

720÷10/400÷10

72÷8/40÷8

9/5

1 4/5

3. 4 1/2 – 2 6/12 ÷ (2 1/2 + 1 1/4)

9/2 – 30/12 ÷ (5/2 + 5/4)

9/2 – 30/12 ÷ (5×4/2×4 + 5×2/4×2)

9/2 – 30/12 ÷ (20/8 + 10/8)

9/2 – 30/12 ÷ 30/8

9/2 – 30/12 × 8/30

9/2 – 30×8/12×30

9/2 – 240/360

9×360/2×360 – 240×2/360×2

3.240/720 – 480/720

2.760÷10/720÷10

276÷6/72÷6

46÷2/12÷2

23/6

3 5/6

4. 4 1/4 + 3 1/5

17/4 + 16/5

17×5/4×5 + 16×4/5×4

85/20 + 64/20

149/20

7 9/20

5. 3 3/4 ÷ 3 2/6 ÷ 2 4/12

15/4 ÷ 20/6 ÷ 28/12

15/4 × 6/20 × 12/28

15×6×12/4×20×28

1.080÷10/2.240÷10

108÷4/224÷4

27/56

6. 7 – 3 4/9

7/1 – 31/9

7×9/1×9 – 31×1/9×1

63/9 – 31/9

32/9

3 5/9