Question

15∶(3 12/17+2 5/17)+(4,2-2 3/5):4

Answer 1

Ответ:

1) 3 12/17 + 2 5/17 = 5 17/17 = 6

2) 15:6=2,5

3) 4,2 - 2 3/5 = 42/10 - 2 3/5 = 42/10 - 26/10 = 16/10 = 1,6

4) 1,6: 4=0,4

5) 2,5+0,4=2,9

Пошаговое объяснение:

Answer 2

Ответ:

6. 2,5. 1,6. 0,4. 2,9.

Объяснение:

1) 3 12/17 + 2 5/17 = 5 17/17 = 6 .

2) 15:6=2,5

3) 4,2 - 2 3/5 = 42/10 - 2 3/5 = 42/10 - 26/10 = 16/10 = 1,6

4) 1,6: 4=0,4

5) 2,5+0,4=2,9

Answer 3

Let's break down the expression step by step:

1. First, we add the mixed numbers 3 12/17 and 2 5/17: 3 12/17 + 2 5/17 = 5 17/17 + 5/17 = 5 22/17

2. Next, we subtract the mixed numbers 4 2/5 and 2 3/5: 4 2/5 - 2 3/5 = 1 4/5

3. Now, we have: 15 : (5 22/17 + 1 4/5)

4. We add the two fractions inside the parentheses: 5 22/17 + 1 4/5 = 5 22/17 + 5/5 = 5 22/17 + 1

5. Now, we add the whole numbers and the fractions: 5 + 1 = 6 22/17 + 1 = (22 + 17) / 17 = 39/17

6. So, the expression becomes: 15 : (6 39/17)

7. Now, we divide 15 by the mixed number 6 39/17: To do this, convert 6 to a fraction with a common denominator of 17: 6 = 6/1

   Now, divide 15 by 6/1: 15 ÷ (6/1) = 15 * (1/6) = 15/6

8. Finally, simplify the fraction: 15/6 can be simplified to 5/2.

So, the result of the expression is 5/2 or 2.5.