Question

17.2 × 8.1 + 23.8 × 5.1 - 17.2 × 7.6 - 23.8 × 4.6 Срочно))) 8 класс

Answer 1

............................ 20.5

Answer 2

Calculating the Expression

To solve the given expression, we can follow the order of operations (PEMDAS/BODMAS), which stands for Parentheses/Brackets, Exponents/Orders, Multiplication and Division (from left to right), and Addition and Subtraction (from left to right).

The given expression is: 17.2 × 8.1 + 23.8 × 5.1 - 17.2 × 7.6 - 23.8 × 4.6

Let's solve it step by step.

Step 1: Multiplication

We start by performing the multiplications in the expression.

17.2 × 8.1 = 139.32 23.8 × 5.1 = 121.38 17.2 × 7.6 = 130.72 23.8 × 4.6 = 109.48

Step 2: Substituting the Results

Now, we substitute the results of the multiplications back into the expression.

139.32 + 121.38 - 130.72 - 109.48

Step 3: Addition and Subtraction

Finally, we perform the addition and subtraction in the expression.

139.32 + 121.38 - 130.72 - 109.48 = 20.5

So, 17.2 × 8.1 + 23.8 × 5.1 - 17.2 × 7.6 - 23.8 × 4.6 = 20.5.

I hope this helps! If you have any other questions or need further assistance, feel free to ask.