Question

-2,5+3,7 -5,2+(-8,5)-8,8-9,714,2•(1 1/2)-18,9:(-0,9)​

Answer 1

Ответ:

1)1,2

2)13,7

3)18,5

4)78,1

5)21

Пошаговое объяснение:

Помойму верно, нов 4 не уверенна

Answer 2

Let's break down the expression step by step:

1. -2.5 + 3.7 = 1.2
2. -5.2 + (-8.5) = -13.7
3. 8.8 - 9.7 = -0.9

Now, let's handle the multiplication and division:

4. 4.2 * (1 + 1/2) = 4.2 * (1.5) = 6.3
5. -18.9 / (-0.9) = 21.0

Now, we have the values of each part of the expression:

1. 1.2
2. -13.7
3. -0.9
4. 6.3
5. 21.0

Now, let's add and subtract these values:

1. 1.2 - 13.7 = -12.5
2. -12.5 - 0.9 = -13.4
3. -13.4 + 6.3 = -7.1
4. -7.1 + 21.0 = 13.9

So, the final result of the expression is 13.9.