Question

7,2•3,8+(6 5/17 +1 12/17 -(4 2/5 -2 3/5 ):5=

Answer 1

6,712

Объяснение: Решение во вложении

Answer 2

Let's break down the expression step by step:

1. Multiply 7.2 by 3.8: 7.2 * 3.8 = 27.36

2. Calculate the fractional parts separately:

   • For the fraction 6 5/17: 6 * 17 + 5 = 102 + 5 = 107 So, 6 5/17 as an improper fraction is 107/17.

   • For the fraction 1 12/17: 1 * 17 + 12 = 17 + 12 = 29

3. Calculate the subtraction inside the parentheses:

   • For the fraction 4 2/5: 4 * 5 + 2 = 20 + 2 = 22 So, 4 2/5 as an improper fraction is 22/5.

   • For the fraction 2 3/5: 2 * 5 + 3 = 10 + 3 = 13

   Now, subtract 2 3/5 from 4 2/5: 22/5 - 13/5 = 9/5

4. Divide the result of the subtraction by 5: (9/5) / 5 = 9/25

5. Add the results together: 107/17 + 29 - 9/25

To add fractions, they need to have a common denominator. In this case, the common denominator would be 25 * 17 = 425.

Converting fractions to have a common denominator:

• 107/17 = (107 * 25) / (17 * 25) = 2675/425
• 29 = 29 * (425/425) = 12325/425
• 9/25 remains the same

Now add the fractions: 2675/425 + 12325/425 - 9/25

Combining the numerators: (2675 + 12325 - 9) / 425 = 15000 / 425

Reduce the fraction: 15000 / 425 = 120 / 17

So, the final result of the expression is 120 / 17.