Tolong jawab semua nya

Jawaban:

1. 8/7 – 2/6 = 48/42 – 14/42 = 34/42 = 17/21

2. 4 1/4 + 2 3/5 = 4 5/20 + 2 12/20 = 6 17/20

3. 4/8 × 6/5 = 3/5

4. 7 6/2 ÷ 3 6/10 = 20/2 ÷ 36/10 = 20/2 × 10/36 = 2 7/9