Answer:
-6
Explanation:
1. Treat the problem like a subtraction problem because -2.5 + (-3.5) can be rewritten as -2.5-3.5
2. When adding or subtracting negative numbers, keep these rules in mind:
Same signs add and keep.
Different signs subtract.
Keep the sign of the higher number.
-2.5 -3.5 have the same sign, so add them up and keep the sign.
And you do get -6.