Question

20/45 - 15/9 = ?

1/8 × 2/7 × 5/2 = ?

15/30 ÷ 2/6 = ?

18/2 ÷ 18/2 ÷ 18/2 = ?

16/17 ÷ 17/16 = ?

15/8 + 6/20 ‐ 7/4 = ?

12/6 - 15/24 + 30/8 = ?

5/8 + 2/8 - 10/8 = ?

1/2 - 7/9 ÷ 2/5 = ?

como posso resolver???​

Answer 1

• 4/9 - 5/3 —> 4-15/9 —> -11/9
• 1/8 . 1/7 . 5/1 —> 5/56
• 1/2 . 6/2 —> 1/2 . 3 —> 3/2
• 9.9.9 —> 729
• 16/17 . 16/17 —> 256/289
• 15/8 + 3/10 - 7/4 —> 75+12-70/40 —> 17/40
• 2 - 5/8 + 15/4 —> 16-5+30/8 —> 41/8
• 5+2-10/8 —> -3/8
• 1/2 - 7/9 . 5/2 —> 1/2 - 35/18 —> -13/9