Question

(25,5-17×2)-(34,7+(-28,9))

Answer 1

(25,5-17*2)-(34,7+(-28,9))=
(25,5-34)-5,8=
=-8,5-5,8=
=-14,3

Answer 2

Ответ -8,5 -5,8 = -14,3

Answer 3

To solve this expression, we need to follow the order of operations, which is a set of rules used to determine the sequence in which mathematical operations are performed.

The order of operations is:

1. Parentheses and brackets (simplify inside)
2. Exponents (ie Powers and Square Roots, etc.)
3. Multiplication and Division (from left to right)
4. Addition and Subtraction (from left to right)

Using these rules, we can simplify the expression:

(25.5 - 17 × 2) - (34.7 + (-28.9))

First, we need to perform the multiplication inside the parentheses:

(25.5 - 34) - (34.7 + (-28.9))

Next, we need to simplify the addition and subtraction inside the parentheses:

(25.5 - 34) - 5.8

Now we can perform the subtraction outside the parentheses:

-8.5 - 5.8

Finally, we can subtract these two values to get the final answer:

-14.3

Therefore, the solution to the expression (25,5-17×2)-(34,7+(-28,9)) is -14.3.