Question

3/4 : (-4/5) : 5\6 :(-6\7) : 7\8 Решите пожалуйста, ребят))

Answer 1

При делении дробь переворачивается, минусы сократятся (минус на минус дает плюс) получим: 3/4*5/4*6/5*7/6*8/7 Сокращаем получаем 3/4*1/4*8 делим 8 на 16 получаем 3/2.
Ответ: 3/2

Answer 2

Solution:

To solve the given expression, let's calculate each fraction separately and then perform the required operations.

1. 3/4 + (-4/5): To add fractions, we need to have a common denominator. The least common multiple (LCM) of 4 and 5 is 20. So, we can rewrite the fractions with a common denominator: - 3/4 = 15/20 - -4/5 = -16/20

Now, we can add the fractions: - 15/20 + (-16/20) = -1/20

Therefore, 3/4 + (-4/5) = -1/20.

2. 5/6 - (-6/7): To subtract fractions, we also need a common denominator. The LCM of 6 and 7 is 42. So, we can rewrite the fractions with a common denominator: - 5/6 = 35/42 - -6/7 = 36/42

Now, we can subtract the fractions: - 35/42 - 36/42 = -1/42

Therefore, 5/6 - (-6/7) = -1/42.

3. 7/8: The fraction 7/8 is already in its simplest form, so we don't need to perform any further calculations.

Therefore, 7/8 = 7/8.

Now, let's summarize the results:

- 3/4 + (-4/5) = -1/20 - 5/6 - (-6/7) = -1/42 - 7/8 = 7/8

I hope this helps! Let me know if you have any further questions.