Question

(1 2/3 +2 5/9):(-21 3/4+7 1/2)=

Answer 1

Получилось так, решение и ответ смотри на фотографии

Answer 2

Ответ:

(3 11/9):(-14 1/4)=-8/27

Answer 3

To simplify the expression (1 2/3 + 2 5/9) / (-21 3/4 + 7 1/2), you can follow these steps:

1. Convert mixed numbers to improper fractions:

   • 1 2/3 can be written as (3 * 1 + 2) / 3 = 5/3.
   • 2 5/9 can be written as (9 * 2 + 5) / 9 = 23/9.
   • -21 3/4 can be written as (4 * -21 - 3) / 4 = -87/4.
   • 7 1/2 can be written as (2 * 7 + 1) / 2 = 15/2.

2. Now, rewrite the expression with these fractions: (5/3 + 23/9) / (-87/4 + 15/2)

3. Find a common denominator for each set of fractions. In this case, the common denominator for the first set is 9, and for the second set, it's 4. (15/9 + 23/9) / (-87/4 + 30/4)

4. Add the fractions in each set: (38/9) / (-57/4)

5. To divide by a fraction, multiply by its reciprocal: (38/9) * (-4/57)

6. Simplify the fraction by canceling common factors between the numerators and denominators: (38 * -4) / (9 * 57)

7. Calculate the result: (-152) / (513)

So, the simplified expression is -152/513.