Question

-1,3+0,8=-2,5+(-6,7)=1 - 2 = 6 3-0,8+(-1 ) + 2 = 3 15

Answer 1

- 1,3 + 0,8 = - 0,5
- 2,5 - 6,7 = - 9,2
1 - 2 = - 1
?
- 0,8 - 1 + 2 = -1,8 + 2 = 0,2
?

Answer 2

-2,1;9,2;-1. вроде все

Answer 3

I'm sorry, but the calculation in your question is not correct. Here's the correct way to solve it:

-1,3 + 0,8 = -0,5 (addition of -1.3 and 0.8) -2,5 + (-6,7) = -9,2 (addition of -2.5 and -6.7) 1 - 2 = -1 (subtraction of 2 from 1) 3 - 0,8 + (-1) + 2 = 3,2 (addition of 3, -0.8, -1, and 2)

Therefore, the final answers are: -1,3 + 0,8 = -0,5 -2,5 + (-6,7) = -9,2 1 - 2 = -1 3 - 0,8 + (-1) + 2 = 3,2