Question

2)-4,2-3,25 -1 ; 4) -8.6 + (-4.9) - 8,6-(-5,3);5) 10 - 61 + 72 - 13:2) 60 - 71 +8-9 + 10.​

Answer 1

2) -4,2 - 3,25 - 1 = -7,45 - 1 = -8,45

4) -8,6 + (-4,9) - 8,6 - (-5,3) = -8,6 - 4,9 - 8,6 + 5,3 = -13,5 - 8,6 + 5,3 = -16,8

5) 10 - 61 + 72 - 13 = -51 + 72 - 13 = 21 - 13 = 8

2) 60 - 71 + 8 - 9 + 10 = -11 + 8 - 9 + 10 = -3 - 9 + 10 = -12 + 10 = -2

Answer 2

It seems like you've provided a series of arithmetic expressions that need to be evaluated. Let's go through each one step by step:

1. -4 + 2 - 3 + 25 - 1 Result: 19

2. -8.6 + (-4.9) - 8.6 - (-5.3) First, calculate the terms inside the parentheses: -8.6 + (-4.9) = -13.5 Then, deal with the double negative: -8.6 - (-5.3) = -8.6 + 5.3 = -3.3 Now, combine the results: -13.5 - 8.6 + 5.3 = -16.8 Result: -16.8

3. 10 - 61 + 72 - 13 ÷ 2 First, perform the division: 13 ÷ 2 = 6.5 Then, calculate the expression: 10 - 61 + 72 - 6.5 = 14.5 Result: 14.5

4. 60 - 71 + 8 - 9 + 10 Calculate the expression: 60 - 71 + 8 - 9 + 10 = -2 Result: -2

Please note that in the second expression, the use of commas seems to indicate decimal points, so I've treated them as such in the calculations. If there was any other intention behind the commas, please provide clarification.