Divide fractions with negatives

Give the answer as a fraction in lowest terms, or a whole number.

1. Evaluate: 3/4 ÷ (−1/8) (Write a fraction in lowest terms, or a whole number.)
2. Evaluate: 1/4 ÷ 5/8 (Write a fraction in lowest terms, or a whole number.)
3. Evaluate: −9/10 ÷ 3/4 (Write a fraction in lowest terms, or a whole number.)
4. Evaluate: 1/3 ÷ 2/5 (Write a fraction in lowest terms, or a whole number.)
5. Evaluate: −1/2 ÷ (−2/5) (Write a fraction in lowest terms, or a whole number.)
6. Evaluate: 1/2 ÷ 1/2 (Write a fraction in lowest terms, or a whole number.)
7. Evaluate: 1/2 ÷ (−1/2) (Write a fraction in lowest terms, or a whole number.)
8. Evaluate: 2/5 ÷ (−1/2) (Write a fraction in lowest terms, or a whole number.)
9. Evaluate: −3/4 ÷ 3/8 (Write a fraction in lowest terms, or a whole number.)
10. Evaluate: 3/8 ÷ 2/5 (Write a fraction in lowest terms, or a whole number.)
11. Evaluate: −6/7 ÷ 1/2 (Write a fraction in lowest terms, or a whole number.)
12. Evaluate: 1/2 ÷ (−3/5) (Write a fraction in lowest terms, or a whole number.)
13. Evaluate: −1/2 ÷ 7/12 (Write a fraction in lowest terms, or a whole number.)
14. Evaluate: −1/3 ÷ (−1/4) (Write a fraction in lowest terms, or a whole number.)
15. Evaluate: −1/4 ÷ (−4/5) (Write a fraction in lowest terms, or a whole number.)
16. Evaluate: 1/2 ÷ (−6/7) (Write a fraction in lowest terms, or a whole number.)
17. Evaluate: −3/4 ÷ 1/8 (Write a fraction in lowest terms, or a whole number.)
18. Evaluate: 3/4 ÷ (−1/2) (Write a fraction in lowest terms, or a whole number.)
19. Evaluate: −4/5 ÷ (−1/6) (Write a fraction in lowest terms, or a whole number.)
20. Evaluate: 1/3 ÷ 2/3 (Write a fraction in lowest terms, or a whole number.)