Question

1)-3,5+8,1= 2)-2,9-3,6 3)-5+3 4) - 7,5+2,8

Answer 1

1)4, 6
2) -6,5
3) -2
4)-4,7

Answer 2

Let's solve each of the expressions step by step:

1. -3.5 + 8.1 = 4.6 Explanation: Simply add the two numbers together: (-3.5) + 8.1 = 4.6

2. -2.9 - 3.6 = -6.5 Explanation: Subtract the second number from the first one: (-2.9) - 3.6 = -6.5

3. -5 + 3 = -2 Explanation: Subtract the second number from the first one: (-5) + 3 = -2

4. -7.5 + 2.8 = -4.7 Explanation: Subtract the second number from the first one: (-7.5) + 2.8 = -4.7

So, the results are:

1. -3.5 + 8.1 = 4.6
2. -2.9 - 3.6 = -6.5
3. -5 + 3 = -2
4. -7.5 + 2.8 = -4.7