Question

3) 3.5-(+7);3,6-(-5);4,6-(+2.5),​

Answer 1

1) 3.5 - 7 = - 3.5

2) 3.6 - (-5) = 3.6 + 5 = 8.6

3) 4.6 - 2.5 = 2.1

Answer 2

Let's calculate each of these expressions step by step:

1. 3.5 - (+7): To subtract a positive number, you can simply perform the subtraction. 3.5 - 7 = -3.5

2. 3.6 - (-5): To subtract a negative number, you can think of it as adding the positive value. 3.6 + 5 = 8.6

3. 4.6 - (+2.5): Again, to subtract a positive number, you can simply perform the subtraction. 4.6 - 2.5 = 2.1

So, the results are:

1. 3.5 - (+7) = -3.5
2. 3.6 - (-5) = 8.6
3. 4.6 - (+2.5) = 2.1