Question

Пожалуйста , распишите Срочно Выполните действие: А) 15/17 * 34/45 Б) 7,2 * 5/9 В) 3 3/8 * 1 1/15 Г) 5 1/2 * 24

Answer 1

A) 15/17 * 34/45

To solve this expression, we need to multiply the fractions. The product of two fractions is found by multiplying the numerators together and the denominators together.

For the given expression, we have:

(15/17) * (34/45) = (15 * 34) / (17 * 45)

Multiplying the numerators gives us 510, and multiplying the denominators gives us 765. Therefore, the result is:

(15/17) * (34/45) = 510/765

Simplifying the fraction by dividing both the numerator and denominator by their greatest common divisor, we get:

(15/17) * (34/45) = 2/3.

B) 7.2 * 5/9

To solve this expression, we need to multiply the decimal number 7.2 by the fraction 5/9.

Multiplying a decimal number by a fraction is straightforward. We can treat the decimal number as a fraction by placing it over 1, and then multiply the numerators together and the denominators together.

For the given expression, we have:

7.2 * (5/9) = (7.2 * 5) / 9

Multiplying 7.2 by 5 gives us 36, and the denominator remains 9. Therefore, the result is:

7.2 * (5/9) = 36/9

Simplifying the fraction by dividing both the numerator and denominator by their greatest common divisor, we get:

7.2 * (5/9) = 4.

C) 3 3/8 * 1 1/15

To solve this expression, we need to multiply the mixed numbers 3 3/8 and 1 1/15.

To multiply mixed numbers, we first convert them to improper fractions. Then, we multiply the numerators together and the denominators together.

For the given expression, we have:

(3 3/8) * (1 1/15) = (27/8) * (16/15)

Multiplying the numerators gives us 432, and multiplying the denominators gives us 120. Therefore, the result is:

(3 3/8) * (1 1/15) = 432/120

Simplifying the fraction by dividing both the numerator and denominator by their greatest common divisor, we get:

(3 3/8) * (1 1/15) = 18/5.

Г) 5 1/2 * 24

To solve this expression, we need to multiply the mixed number 5 1/2 by the whole number 24.

To multiply a mixed number by a whole number, we first convert the mixed number to an improper fraction. Then, we multiply the numerator of the improper fraction by the whole number.

For the given expression, we have:

(5 1/2) * 24 = (11/2) * 24

Multiplying the numerator 11 by 24 gives us 264, and the denominator remains 2. Therefore, the result is:

(5 1/2) * 24 = 264/2

Simplifying the fraction by dividing both the numerator and denominator by their greatest common divisor, we get:

(5 1/2) * 24 = 132.

I hope this helps! Let me know if you have any further questions.