Question

Type the integer that makes the following subtraction sentence true:
-28 - ? = 63

Answer 1

? = -91

Explanation:

Let's keep the question mark as x

x must be a negative number if there is a subtraction sign before it, if the first number of the problem is negative, and the difference is positive.

-28 - (-x) = 63

-28 -1(x) = 63

-1(x) = 63 +28 = 91

/-1 /-1

x = -91

? = -91

Answer 2

63+28=91

So

-28-(-91)=63