Question

2 3/8 : 1 1/4 - 7 2/7• 2 1/17 + 4 2/5Быстрее пожалуйстаС решением

Answer 1

Ответ:

Пошаговое объяснение:

2 3/8=19/8

1 1/4=5/4

19/8÷5/4=19/8*4/5=19/10

4 2/5=4,4

1,9+4,4=6,3

7 2/7*2 1/17=51/7*35/17=3*5=15

6,3-15=-8,7

Answer 2

To solve the expression 2 3/8 : 1 1/4 - 7 2/7 • 2 1/17 + 4 2/5, we need to follow the order of operations (PEMDAS/BODMAS). This means we should perform the operations in the following order: parentheses, exponents, multiplication and division (from left to right), and finally addition and subtraction (from left to right).

Let's break down the expression step by step:

1. Convert the mixed numbers to improper fractions: - 2 3/8 = (2 * 8 + 3) / 8 = 19/8 - 1 1/4 = (1 * 4 + 1) / 4 = 5/4 - 7 2/7 = (7 * 7 + 2) / 7 = 51/7 - 2 1/17 = (2 * 17 + 1) / 17 = 35/17 - 4 2/5 = (4 * 5 + 2) / 5 = 22/5

2. Perform the multiplication and division operations: - 19/8 : 5/4 = (19/8) * (4/5) = (19 * 4) / (8 * 5) = 76/40 = 19/10 - 51/7 • 35/17 = (51/7) * (35/17) = (51 * 35) / (7 * 17) = 1785/119 - Multiply the result by 2/5: (1785/119) * (22/5) = (1785 * 22) / (119 * 5) = 39150/595

3. Perform the addition and subtraction operations: - 19/10 - 39150/595 = (19/10) - (39150/595) = (19 * 595 - 39150 * 10) / (10 * 595) = -368005/595

Therefore, the solution to the expression 2 3/8 : 1 1/4 - 7 2/7 • 2 1/17 + 4 2/5 is -368005/595.

Please note that the solution is in fractional form and can be simplified further if needed.