Question

-2,6+3,9-7,4+2,6-(-2,8)+(3,5)​

Answer 1

Ответ:

-2,6 + 3,9 - 7,4 + 2,6 - (-2,8) + 3,5

1. -2,6 + 3,9 = 1,3

2. 1,3 - 7,4 = -6,1

3. -6,1 + 2,6 = -3,5

4. -3,5 - (-2,8) = -3,5 + 2,8 = -0,7

5. -0,7 + 3,5 = 2,8

Отже, вираз -2,6 + 3,9 - 7,4 + 2,6 - (-2,8) + 3,5 дорівнює 2,8.

Answer 2

Let's simplify the expression step by step:

1. Start with the addition and subtraction operations from left to right:

   -2.6 + 3.9 = 1.3 1.3 - 7.4 = -6.1 -6.1 + 2.6 = -3.5

2. Now, let's deal with the expression within parentheses:

   -(-2.8) = 2.8

3. Finally, add the last term:

   -3.5 + 3.5 = 0

So, the value of the expression is 0.