Question

3,9•4,5+1,8•3,9-5,1•3,9

Answer 1

Ответ:

3,9•4,5+1,8•3,9-5,1•3,9=4,68

Answer 2

To evaluate the expression, we'll perform the operations according to the order of operations (PEMDAS/BODMAS), which stands for Parentheses/Brackets, Exponents/Orders, Multiplication/Division, and Addition/Subtraction.

Let's break down the expression step by step:

1. Multiplication: Multiply the decimal numbers.

3,9 * 4,5 = 17,55 1,8 * 3,9 = 7,02 5,1 * 3,9 = 19,89

The expression now becomes: 17,55 + 7,02 - 19,89

2. Addition and Subtraction: Perform the remaining addition and subtraction operations.

17,55 + 7,02 = 24,57 24,57 - 19,89 = 4,68

Therefore, the value of the expression 3,9 * 4,5 + 1,8 * 3,9 - 5,1 * 3,9 is 4,68.