Question

9/20:3/5, 5 4/9:7, 2 4/9:3 2/3

Answer 1

Ответ:

Пошаговое объяснение:

9/20:3/5=9/20*5/3=3/4

5 4/9:7= 49/9*1/7=7/9

2 4/9:3 2/3=22/9*3/11=2/3

Answer 2

To simplify the given expressions, let's perform the necessary calculations step by step:

1. Simplifying 9/20 ÷ 3/5: Dividing fractions involves multiplying the first fraction by the reciprocal of the second fraction. 9/20 ÷ 3/5 = 9/20 * 5/3 = (9 * 5) / (20 * 3) = 45/60 = 3/4

2. Simplifying 5 4/9 ÷ 7: To divide a mixed number by a whole number, convert the mixed number to an improper fraction and then proceed with the division. 5 4/9 = (5 * 9 + 4)/9 = 49/9 Therefore, 5 4/9 ÷ 7 = (49/9) ÷ 7 = 49/9 * 1/7 = (49 * 1) / (9 * 7) = 49/63

3. Simplifying 2 4/9 ÷ 3 2/3: Again, convert the mixed numbers to improper fractions and proceed with the division. 2 4/9 = (2 * 9 + 4)/9 = 22/9 3 2/3 = (3 * 3 + 2)/3 = 11/3 Therefore, 2 4/9 ÷ 3 2/3 = (22/9) ÷ (11/3) = 22/9 * 3/11 = (22 * 3) / (9 * 11) = 66/99 = 2/3

In summary: 9/20 ÷ 3/5 = 3/4 5 4/9 ÷ 7 = 49/63 2 4/9 ÷ 3 2/3 = 2/3