Question

(7/15+7/30+4/5) :(2-1/3-1/2) ; 17:(3/5+1/4) +(7/8-1/4) х (4/5) 2(степени).Срочно даю 100 баллов!С объяснением!!!​

Answer 1

Ответ:

Пошаговое объяснение:

Answer 2

Ответ:

Пошаговое объяснение:

№1

1) 7/15 + 7/30 + 4/5 = 14/30 + 7/30 + 24/30 = 45/30 = 3/2

2) 2 - 1/3 - 1/2 = 1. 6/6 - 2/6 - 3/6 =

1. 1/6 = 7/6

3) 3/2 : 7/6 = 3/2 * 6/7 = 18/14 = 9/7 =

1. 2/7

№2

1) 3/5 + 1/4 = 12/20 + 5/20 = 17/20

2) 17 : 17/20 = 17 * 20/17 = 1 * 20/1 = 20/1 = 20

3) 7/8 - 1/4 = 7/8 - 2/8 = 5/8

4) 5/8 * (4/5)² = 5/8 * 16/25 = 1/1 * 2/5 = 2/5

5) 20 + 2/5 = 20. 2/5

Answer 3

To solve the given expression, let's break it down step by step:

1. Simplify the expression inside the parentheses: (7/15 + 7/30 + 4/5) / (2 - 1/3 - 1/2) + 17 / (3/5 + 1/4) + (7/8 - 1/4) * (4/5) + 2^2

2. Perform the calculations within the parentheses: (14/30 + 7/30 + 24/30) / (2 - 1/3 - 1/2) + 17 / (12/20 + 5/20) + (7/8 - 2/8) * (4/5) + 4

3. Simplify the fractions: (45/30) / (2 - 1/3 - 1/2) + 17 / (17/20) + (5/8) * (4/5) + 4

4. Simplify the expression within the parentheses: (3/2) / (2 - 1/3 - 1/2) + 17 / (17/20) + (5/8) * (4/5) + 4

5. Simplify the expression within the parentheses: (3/2) / (6/6 - 2/6 - 3/6) + 17 / (17/20) + (5/8) * (4/5) + 4

6. Simplify the expression within the parentheses: (3/2) / (1/6) + 17 / (17/20) + (5/8) * (4/5) + 4

7. Invert and multiply: (3/2) * (6/1) + 17 / (17/20) + (5/8) * (4/5) + 4

8. Simplify the fractions: 9 + 17 / (17/20) + (5/8) * (4/5) + 4

9. Simplify the expression within the parentheses: 9 + 17 / (17/20) + (1/2) + 4

10. Simplify the fractions: 9 + 17 / (17/20) + 1/2 + 4

11. Invert and multiply: 9 + 17 * (20/17) + 1/2 + 4

12. Perform the multiplication: 9 + (340/17) + 1/2 + 4

13. Simplify the fractions: 9 + (20/1) + 1/2 + 4

14. Perform the addition: 9 + 20 + 1/2 + 4

15. Convert the whole numbers to fractions: 9/1 + 20/1 + 1/2 + 4/1

16. Find a common denominator: 9/1 + 20/1 + 1/2 + 8/2

17. Add the fractions: 9/1 + 20/1 + 1/2 + 4/2

18. Convert the whole numbers to fractions: 9/1 + 20/1 + 1/2 + 2/1

19. Find a common denominator: 18/2 + 40/2 + 1/2 + 4/2

20. Add the fractions: 63/2

Therefore, the value of the given expression is 63/2.

Please note that the above solution is based on the given expression and the order of operations. If there are any parentheses or other mathematical operations that are not explicitly mentioned, please let me know, and I'll be happy to assist you further.