The sum
of a negative
and positive
integer is
negative?

Adding two positive integers always yields a positive sum; adding two negative integers always yields a negative sum. To find the sum of a positive and a negative integer, take the absolute value of each integer and then subtract these values. ... The sum of any integer and its opposite is equal to zero.

Step-by-step explanation:

hope this helps :)

m∠a is 90°

m∠b is 40°