Question

3/4*5/12. 15/7 *6 1/8​

Answer 1

Ответ:

15/36 и 735/54

числитель умножается на числитель, а знаменатель на знаменатель

Во втором случае надо еще 2 дробь перевести из смешанной в неправильную

Answer 2

Let's calculate each of these multiplications step by step:

1. (3/4) * (5/12):

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

(3/4) * (5/12) = (3 * 5) / (4 * 12) = 15/48

Now, we can simplify this fraction by finding the greatest common divisor (GCD) of 15 and 48, which is 3:

(15/3) / (48/3) = 5/16

So, (3/4) * (5/12) = 5/16.

2. (15/7) * (6 1/8):

First, convert the mixed number (6 1/8) to an improper fraction. To do this, multiply the whole number (6) by the denominator (8) and add the numerator (1):

6 * 8 + 1 = 48 + 1 = 49

So, 6 1/8 is equivalent to 49/8 as an improper fraction.

Now, multiply the fractions:

(15/7) * (49/8)

To multiply fractions, multiply the numerators together and the denominators together:

(15 * 49) / (7 * 8) = 735 / 56

Now, simplify this fraction by finding the GCD of 735 and 56, which is 7:

(735/7) / (56/7) = 105/8

So, (15/7) * (6 1/8) = 105/8.