Answer:
-2
Step-by-step explanation:
You have to write it just as the question states it.
5 - (-8) = 5 + 8 = 13
-4 + - 11 = - 4 - 11 = - 15
It is hardly an increase. In this case increase means addition. The math sentence would be written as
13 + - 15 = 13 - 15 = - 2
