Question

(3 1/6-4 1/7)×(5 4/5-0,55)

Answer 1

Ответ: - 5 1/8.

другой вариант фото не грузит.

Answer 2

To solve the expression, let's first convert the mixed numbers to improper fractions, perform the operations within the parentheses, and then multiply the results.

Step 1: Convert mixed numbers to improper fractions: 3 1/6 = (6 * 3 + 1) / 6 = 19 / 6 4 1/7 = (7 * 4 + 1) / 7 = 29 / 7

5 4/5 = (5 * 5 + 4) / 5 = 29 / 5 0.55 = 55 / 100 = 11 / 20

Step 2: Perform operations within the parentheses: (19/6 - 29/7) * (29/5 - 11/20)

Step 3: Simplify the fractions: Common denominator for 6 and 7 is 42: (19 * 7 - 29 * 6) / 42 = (133 - 174) / 42 = -41 / 42

Common denominator for 5 and 20 is 20: (29 * 4 - 11 * 1) / 20 = (116 - 11) / 20 = 105 / 20 = 21/4

Step 4: Multiply the results: (-41/42) * (21/4)

Step 5: Multiply the numerators and denominators: (-41 * 21) / (42 * 4) = -861 / 168

The final result is -861 / 168, which is approximately -5.125 when rounded to three decimal places.