Question

(2 3/4+5 2/7+15 27/28)-13/19​

Answer 1

Ответ:

23 Целых 6|19

Answer 2

Ответ:

(22+2)- 13/19        24- 13/19         443/19

Пошаговое объяснение:

Answer 3

To calculate the expression (2 3/4 + 5 2/7 + 15 27/28) - 13/19, we need to first add the numbers within the parentheses and then subtract 13/19. Let's break it down step by step:

1. Add the mixed numbers within the parentheses: 2 3/4 + 5 2/7 + 15 27/28

To add mixed numbers, first add the whole numbers and then add the fractions separately:

Whole numbers: 2 + 5 + 15 = 22

Now, let's add the fractions: 3/4 + 2/7 + 27/28

To add fractions with different denominators, we need to find a common denominator. In this case, the common denominator is 28 (4 * 7).

Now, we'll convert each fraction to have a denominator of 28: (3/4) * (7/7) = 21/28 (2/7) * (4/4) = 8/28 27/28 (already has the common denominator)

Now, add the fractions with the common denominator: 21/28 + 8/28 + 27/28 = (21 + 8 + 27) / 28 = 56/28

2. Simplify the fraction 56/28: 56/28 = 2

So, the expression (2 3/4 + 5 2/7 + 15 27/28) simplifies to 22 2/28, which further simplifies to 22 1/14.

Now, subtract 13/19 from this result: (22 1/14) - (13/19)

To subtract mixed numbers, subtract the whole numbers and then subtract the fractions separately:

Whole numbers: 22 - 0 (since we're subtracting 0)

Now, subtract the fractions: 1/14 - 13/19

To subtract fractions with different denominators, find a common denominator, which in this case is 266 (14 * 19).

Now, we'll convert each fraction to have a denominator of 266: (1/14) * (19/19) = 19/266 (13/19) * (14/14) = 182/266

Now, subtract the fractions with the common denominator: 19/266 - 182/266 = (19 - 182) / 266 = -163/266

So, the final result is: 0 - 163/266

To subtract a fraction from 0, you can simply write it as a negative fraction:

-163/266