Work out \( -6.75-(-3.51) \)

To solve \( -6.75 - (-3.51) \), you can start by turning the double negative into a positive. So it becomes \( -6.75 + 3.51 \). Now, you can perform the addition: 1. Combine the numbers: \( -6.75 + 3.51 \). 2. Since you're adding a negative and a positive number, you subtract the smaller absolute value from the larger one. Thus, \( 6.75 - 3.51 = 3.24 \). 3. Since the larger number was negative, the result is \( -3.24 \). So, \( -6.75 - (-3.51) = -3.24 \).