Answer:
x = -0.9
Explanation:
You need to isolate x in order to find x so,
-3.4 - x = -2 1/2 or -2.5
-3.4 - x = -2.5
Add 3.4 to -2.5
-3.4 - x = -2.5
+3.4 +3.4
-x = 0.9
x CANNOT be negative so divide -1 to both sides
-x/-1 = 0.9/-1
x = -0.9
Checking answer
-3.4 - (-0.9) = -2.5
-3.4 + 0.9 = -2.5
-2.5 = -2.5