Question

0,5×(13,4+15,4)-0,4×13,1-(18,6-13,2)×0,5

Answer 1

0,5 × 28,8 - 5,24 - 5,4 × 0,5 = 14,4 - 5,24 - 2,7 = 6, 46.

Ответ: 6,46 или

$6 \frac{23}{50} = \frac{323}{50}$

Answer 2

To solve this expression, we'll follow the order of operations, which is often remembered using the acronym PEMDAS (Parentheses, Exponents, Multiplication and Division, Addition and Subtraction).

The expression is:

0.5 × (13.4 + 15.4) - 0.4 × 13.1 - (18.6 - 13.2) × 0.5

First, we'll deal with what's inside the parentheses:

0.5 × (28.8) - 0.4 × 13.1 - (5.4) × 0.5

Next, we'll perform the multiplications:

14.4 - 5.24 - 2.7

Now, we'll perform the subtractions:

6.16 - 2.7

Finally, we'll do the last subtraction:

3.46

So, the result of the expression is approximately 3.46.