Question

add.
-52 + (-39) =
-42 + 43 =

Explanation:

Step1: Add two negative numbers

$-52 + (-39) = -(52 + 39) = -91$

Step2: Add negative and positive numbers

$-42 + 43 = 43 - 42 = 1$

Answer:

$-52 + (-39) = -91$
$-42 + 43 = 1$