Question

(9-3/4) / (2 4/5-1/7) *(2 2/5 + 3 3/4 + 1/2)с действиями пжт решите

Answer 1

Ответ:

Пошаговое объяснение:

Answer 2

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

Step 1: Simplify the fractions inside the parentheses

• Convert mixed numbers to improper fractions: 9-3/4 = (49 + 3)/4 = 39/4 2 4/5 = (52 + 4)/5 = 14/5

Step 2: Perform operations inside the parentheses (39/4) / (14/5 - 1/7) * (2 2/5 + 3 3/4 + 1/2) = (39/4) / (14/5 - 1/7) * (12/5 + 15/4 + 1/2)

Step 3: Find the common denominator for fractions in the denominator (14/5 - 1/7): The common denominator for 5 and 7 is 35. Convert both fractions to have the same denominator: (14/5) * (7/7) - (1/7) * (5/5) = 98/35 - 5/35 = 93/35

Step 4: Perform the division and multiplication: (39/4) / (93/35) * (12/5 + 15/4 + 1/2)

To divide fractions, multiply by the reciprocal of the divisor: (39/4) * (35/93) * (12/5 + 15/4 + 1/2)

Step 5: Multiply the fractions and mixed numbers: Now, let's multiply all the fractions and mixed numbers together: (39/4) * (35/93) * (12/5 + 15/4 + 1/2) = (39/4) * (35/93) * (60/20 + 75/20 + 10/20) = (39/4) * (35/93) * (145/20)

Step 6: Multiply the remaining fractions: To multiply fractions, multiply the numerators together and the denominators together: (39 * 35 * 145) / (4 * 93 * 20)

Step 7: Calculate the result: (198375) / (7440) = 26.6888 (rounded to four decimal places)

So, the result of the expression is approximately 26.6888.