Question

3 7/15*0,25+5/6-1 2/5 5/4:(3/20+0,75)

Answer 1

Ответ:

1 пример

52\15 * 1\4+5\6-7\5

сокращаем

13\15+5\6-7\5= 3\10=0.3

2 пример

переводим в обич дробь

5\4:(3\20 + 3\4)

плюсуем и получаем 5\4 : 9\10

согращаем 5\2 * 5\9

умножаем, и равно =25\18=1 7\18

Пошаговое объяснение:

Answer 2

Ответ:

1)3/10(оннан үш)

2)25/18(18-ден 25)

Пошаговое объяснение:

я надеюсь ты знаешь казахский

Answer 3

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

1. First, let's simplify the division operation within the parentheses:

(3/20 + 0.75) = 15/20 + 15/20 = (15 + 15)/20 = 30/20 = 3/2

2. Now, let's simplify the division operation outside the parentheses:

5/4 ÷ (3/2) = 5/4 * (2/3) = (5 * 2) / (4 * 3) = 10/12 = 5/6

3. Next, let's simplify the multiplication operation:

3 7/15 * 0.25 = (52/15) * (1/4) = 52/60 = 13/15

4. Moving on to the addition and subtraction operations:

(13/15) + (5/6) - (1 2/5)

To simplify further, we need to convert the mixed number (1 2/5) into an improper fraction:

1 2/5 = (5 * 1 + 2) / 5 = 7/5

Now, we can rewrite the expression as:

(13/15) + (5/6) - (7/5)

To add or subtract fractions, we need a common denominator. The least common multiple (LCM) of 15, 6, and 5 is 30.

Converting the fractions to have a common denominator of 30:

(13/15) * (2/2) = 26/30 (5/6) * (5/5) = 25/30 (7/5) * (6/6) = 42/30

Now, we can rewrite the expression:

26/30 + 25/30 - 42/30

Combining the numerators:

26 + 25 - 42 = 51 - 42 = 9

So, the final answer is 9.