Question

(1/5 плюс 2/15)*3/4

Answer 1

(1/5 + 2/15) * 3/4.
Сначала нужно привести к общему знаменателю (15) то, что в скобках: 1/5 = 3/15.
(3/15 + 2/15) * 3/4 = 5/15 * 3/4.
Сокращаем 5/15 и получаем 1/3. Теперь снова нужно привести кк общему знаменателю (12): 1/3 = 4/12, а 3/4 = 9/12
1/3 * 3/4 = 4/12 * 9/12 = 4/12 : 12/9 = 4/9.

(1/5+ 2/15) * 3/4 = (3/15 + 2/15) * 3/4 = 5/15 * 3/4 = 1/3 * 3/4 = 4/12 * 9/12 = 4/12 : 12/9 = 4/9.

Answer 2

To calculate (1/5 + 2/15) * 3/4, we can simplify it step by step:

1/5 + 2/15 = 3/15 + 2/15 = 5/15 = 1/3

Now, we multiply 1/3 by 3/4:

(1/3) * (3/4) = 3/12 = 1/4

Therefore, (1/5 + 2/15) * 3/4 simplifies to 1/4.