Question

-5•(-4)-42:(13,2-7,2)​

Answer 1

Вложение фото решения и ответа.

Answer 2

To evaluate the given expression, let's break it down step by step:

First, let's simplify the expression within parentheses (13,2 - 7,2). However, I noticed that you used commas instead of periods to indicate decimal points. To avoid confusion, I'll assume you intended to use periods instead. So, the expression becomes:

13.2 - 7.2 = 6

Next, let's substitute the simplified expression back into the original expression:

-5 * (-4) - 42 / 6

Now, let's simplify the multiplication and division operations separately:

-5 * (-4) = 20

42 / 6 = 7

Substituting the simplified values back into the expression:

20 - 7

Finally, subtracting 7 from 20:

20 - 7 = 13

Therefore, the value of the expression -5•(-4)-42:(13,2-7,2) is 13.