
Выполните действия: 1)20 1/4×20 4/92)2 3/5:1 11/153)8 1/11×5 1/24)6 11/25:7 2/335 БАЛЛОВ


Ответы на вопрос





1) To solve the expression 20 + 1/4 × 20 + 4/9, we need to follow the order of operations, which is parentheses, exponents, multiplication and division (from left to right), and addition and subtraction (from left to right).
First, let's simplify the multiplication: 1/4 × 20 = 5.
Now we can rewrite the expression as 20 + 5 + 4/9.
Next, let's add the whole numbers: 20 + 5 = 25.
Finally, let's add the fractions: 25 + 4/9. To add fractions, we need to find a common denominator. The common denominator for 9 and 1 is 9.
Converting 25 to a fraction with a denominator of 9, we get 225/9.
Now we can add the fractions: 225/9 + 4/9 = 229/9.
Therefore, the value of the expression 20 + 1/4 × 20 + 4/9 is 229/9.
2) To solve the expression 2 + 3/5 : 1 + 11/15, we again need to follow the order of operations.
First, let's simplify the division: 3/5 : 1 = 3/5.
Now we can rewrite the expression as 2 + 3/5 + 11/15.
Next, let's add the whole numbers: 2 + 3/5 = 2 3/5.
Finally, let's add the fractions: 2 3/5 + 11/15. To add fractions, we need to find a common denominator. The common denominator for 5 and 15 is 15.
Converting 2 3/5 to a fraction with a denominator of 15, we get 13/5.
Now we can add the fractions: 13/5 + 11/15. To add fractions, we need to have the same denominator.
Converting 13/5 to a fraction with a denominator of 15, we get 39/15.
Now we can add the fractions: 39/15 + 11/15 = 50/15.
Therefore, the value of the expression 2 + 3/5 : 1 + 11/15 is 50/15.
3) To solve the expression 8 + 1/11 × 5 + 1/24, we follow the order of operations.
First, let's simplify the multiplication: 1/11 × 5 = 5/11.
Now we can rewrite the expression as 8 + 5/11 + 1/24.
Next, let's add the whole numbers: 8 + 5/11 = 8 5/11.
Finally, let's add the fractions: 8 5/11 + 1/24. To add fractions, we need to find a common denominator. The common denominator for 11 and 24 is 264.
Converting 8 5/11 to a fraction with a denominator of 264, we get 93/11.
Now we can add the fractions: 93/11 + 1/24. To add fractions, we need to have the same denominator.
Converting 93/11 to a fraction with a denominator of 264, we get 2283/264.
Now we can add the fractions: 2283/264 + 1/24 = 2351/264.
Therefore, the value of the expression 8 + 1/11 × 5 + 1/24 is 2351/264.
4) To solve the expression 6 11/25 : 7 2/33, we follow the order of operations.
First, let's simplify the division: 6 11/25 : 7 2/33. To divide fractions, we need to multiply by the reciprocal of the divisor.
Converting 6 11/25 to an improper fraction, we get 161/25.
Converting 7 2/33 to an improper fraction, we get 233/33.
Now we can rewrite the expression as 161/25 ÷ 233/33.
To divide fractions, we multiply the first fraction by the reciprocal of the second fraction.
So, 161/25 ÷ 233/33 = 161/25 × 33/233.
Multiplying the numerators and denominators, we get (161 × 33) / (25 × 233) = 5313/5825.
Therefore, the value of the expression 6 11/25 : 7 2/33 is 5313/5825.
5) I'm sorry, but I'm not sure what you mean by "5+БАЛЛОВ". Could you please provide more context or clarify your question?


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