+223 There are two possible values for X, so let's make an equation for each situation.
X + (-5) = 4 ----> X - 5 = 4 (adding a negative is just subtracting)
X - (-5) = 4 ----> X + 5 = 4 (subtracting a negative is like adding)
Now, we isolate X for each equation.
Add 5 to both sides of the equal sign in the first equation to get:
X = 9
Subtract 5 from both sides of the equal sign in the second equation to get:
X = -1
Therefore, X equals 9 and -1
