Question

6,5 · 2,8 - 23 : ( 2 5. ) (1 -- + 3 -- ) ( 7 7 )

Answer 1

Ответ:

Выражение 6,5 × 2,8 - 23 ÷ (25.) равно:

6,5 × 2,8 - 23 ÷ 25 = 18,2 - 0,92 = 17,28

Таким образом, результат выражения не является 17,12, а равен 17,28.

Answer 2

Let's break down the expression step by step:

1. First, calculate the division inside the parentheses: 23 / (25) = 0.92

2. Next, calculate the addition and subtraction inside the parentheses: (1 - 3) = -2

3. Now, we have the following expression: 6.5 * 2.8 - 0.92 * (-2) * 77

4. Calculate the multiplication: 6.5 * 2.8 = 18.2 0.92 * (-2) = -1.84

5. Now, we have the following expression: 18.2 - (-1.84) * 77

6. Calculate the final multiplication and subtraction: -1.84 * 77 = -141.68 18.2 - (-141.68) = 18.2 + 141.68 = 159.88

So, the final result of the expression is 159.88.