Answer:
-0.6
Step-by-step explanation:
To add these up, i start with the negative values. To do this, i rearranged the question to this
-15.4 + (-10.4) + 25.2
After rearranging the question, I add the negatives
-25.8 + 25.2
With this, I do 25.2 - 25.8 as adding a negative and a positive value together is the same as subtracting thE positive from the negative.
This leaves us with -0.6 as our final answer
