Question

Ввычесли значение выражений 60-28+9= 3+(47-20)= в скобках делаем первое

Answer 1

32
60-28+9=41
27
3+(47-20)=30

Answer 2

To evaluate the expressions, we need to follow the order of operations, which is typically represented by the acronym PEMDAS (Parentheses, Exponents, Multiplication and Division, Addition and Subtraction). According to this rule, we first handle any operations within parentheses, then perform any exponentiation, followed by multiplication and division from left to right, and finally addition and subtraction from left to right.

Let's evaluate the expressions step-by-step:

1. 60 - 28 + 9: First, perform the subtraction: 60 - 28 = 32. Then, perform the addition: 32 + 9 = 41. So, the result is 41.

2. 3 + (47 - 20): First, perform the subtraction within the parentheses: 47 - 20 = 27. Then, perform the addition: 3 + 27 = 30. So, the result is 30.

Now, the second part of the question says "in the parentheses, we do the first one." I interpret it as reusing the first result (41) within the parentheses of the second expression.

3. 3 + (41 - 20): First, perform the subtraction within the parentheses: 41 - 20 = 21. Then, perform the addition: 3 + 21 = 24. So, the result is 24.

To summarize:

• The value of the first expression (60 - 28 + 9) is 41.
• The value of the second expression (3 + (47 - 20)) is 30.
• The value of the third expression (3 + (41 - 20)) is 24.