Question

[-2,5+2 1/3]•[-5 1/7]:1 1/3

Answer 1

Ответ:

[ ] Эти формулы символы модуля или просто скобки?

Answer 2

To simplify the expression [-2,5+2 1/3]•[-5 1/7]:1 1/3, we'll break it down step by step:

1. Simplify the terms inside the square brackets: -2,5 + 2 1/3 = -2.5 + 2 1/3 = -2.5 + 7/3

2. Add -2.5 and 7/3: -2.5 + 7/3 = (-7.5/2) + (7/3)

3. Find a common denominator, which is 6: -7.5/2 = -15/4 7/3 = 14/6

4. Now, add the fractions: -15/4 + 14/6

5. Find a common denominator, which is 12: -15/4 = -45/12 14/6 = 28/12

6. Add the fractions: -45/12 + 28/12 = -17/12

So, the expression simplifies to: [-2,5+2 1/3]•[-5 1/7]:1 1/3 = -17/12 ÷ 1 1/3

To divide by 1 1/3, convert it to an improper fraction: 1 1/3 = (3/3 + 1/3) = 4/3

Now, divide -17/12 by 4/3: (-17/12) ÷ (4/3) = (-17/12) * (3/4)

Multiply the fractions: = (-17 * 3) / (12 * 4) = (-51) / 48

Now, simplify the fraction by dividing the numerator and denominator by their greatest common divisor, which is 3: = (-51 / 3) / (48 / 3) = -17/16

So, the simplified expression is -17/16.