Question

Знайди значення виразу 4 2/3+(-2 8/15)-(-2 3/5) срочно ​

Answer 1

2 8 3

4 ---------- - 2 ---------- - 2 ----------

3 15 5

превратим дроби в неправильной получится

14 38 13

----- - ------- - --------

3 15 5

а тепер находим общий знаменатель

70-38-39 7

-------------------------------- = - ------------------

15 15

7

Ответ: - ---------- (минус семь пятнадцатых)

15

Answer 2

Calculating the Expression 4 2/3 (-2 8/15) - (-2 3/5)

To calculate the expression 4 2/3 (-2 8/15) - (-2 3/5), we can break it down step by step.

1. Convert Mixed Numbers to Improper Fractions: - 4 2/3 can be converted to an improper fraction as follows: - 4 2/3 = (4 * 3 + 2) / 3 = 14/3 - -2 8/15 can be converted to an improper fraction as follows: - -2 8/15 = (-2 * 15 + 8) / 15 = -38/15 - -2 3/5 can be converted to an improper fraction as follows: - -2 3/5 = (-2 * 5 + 3) / 5 = -13/5

2. Perform the Subtraction: - Now, we can perform the subtraction as follows: - 14/3 * (-38/15) - (-13/5)

3. Calculate the Result: - To calculate the result, we can use the following formula: - (a/b) * (c/d) = (a * c) / (b * d) - Therefore, (14/3) * (-38/15) = (14 * -38) / (3 * 15) = -532/45 - Finally, we have -532/45 - (-13/5)

4. Perform the Final Subtraction: - To perform the final subtraction, we can use the following formula: - a - (-b) = a + b - Therefore, -532/45 - (-13/5) = -532/45 + 13/5

5. Calculate the Final Result: - To calculate the final result, we can find a common denominator and then perform the addition: - The common denominator for 45 and 5 is 45. - Therefore, -532/45 + 13/5 = (-532 + 585) / 45 = 53/45

The value of the expression 4 2/3 (-2 8/15) - (-2 3/5) is 53/45.