Question

1)4/5*7/12 2) 2 1/8*1 3/25 3) 5/11*33​

Answer 1

Ответ:

$\frac{4}{5}\times\frac{7}{12} = \frac{4 \times 7}{5 \times 12} = \frac{28}{60} = \frac{7}{15}$

$2 \frac{1}{8} \times 1 \frac{3}{25} = \frac{17}{8} \times \frac{28}{25} = \frac{17 \times 28}{8 \times 25} = \frac{17 \times 7}{2 \times 25} = 2 \frac{19}{50}$

$\frac{5}{11} \times 33 = \frac{5 \times 33}{11} = \frac{5 \times 3}{1} = 15$

Answer 2

Sure, let's calculate those expressions:

1. (4/5) * (7/12)

To multiply fractions, you simply multiply the numerators (top numbers) together and the denominators (bottom numbers) together:

(4/5) * (7/12) = (4 * 7) / (5 * 12) = 28/60

You can simplify this fraction by dividing both the numerator and denominator by their greatest common divisor, which is 4:

(28/4) / (60/4) = 7/15

So, 4/5 * 7/12 = 7/15

2. (2 1/8) * (1 3/25)

To multiply mixed numbers, first convert them to improper fractions and then multiply:

2 1/8 = (2 * 8 + 1) / 8 = 17/8 1 3/25 = (1 * 25 + 3) / 25 = 28/25

Now, multiply the improper fractions:

(17/8) * (28/25) = (17 * 28) / (8 * 25) = 476/200

You can simplify this fraction by dividing both the numerator and denominator by their greatest common divisor, which is 4:

(476/4) / (200/4) = 119/50

So, 2 1/8 * 1 3/25 = 119/50

3. (5/11) * 33

To multiply a fraction by a whole number, you simply multiply the whole number by the numerator and keep the denominator the same:

(5/11) * 33 = (5 * 33) / 11 = 165/11

You can simplify this fraction by dividing both the numerator and denominator by their greatest common divisor, which is 11:

(165/11) / (11/11) = 15/1 = 15

So, 5/11 * 33 = 15