Question

Va rog frumos repede ​

Answer 1

Răspuns:

1. 2/3

2. 1/2

3. 4/9

4. 4/5

5. 12/19

6. 7/12

7. 111/170

Explicație pas cu pas:

1. 9/7 × 14/27 = 2/3

2. 2/5 × 5/4 = 1/2

3. 4/5 × 5/9 = 4/9
4. 8/5 ÷ 2 = 8/5 × 1/2 = 4/5

5. 1/3 ÷ 19/36 = 1/3 × 36/19 = 12/19

6. 3/4 ÷ 9/7 = 3/4 × 7/9 = 1/4 × 7/3 = 7/12

7. 12/17 × (3/4 × 1/6 + 4/5) = 12/17 × (1/4 × 1/2 + 4/5) = 12/17 × (1/8 + 4/5) = 12/17 × 37/40 = 3/17 × 37/10 = 111/170