Answer:
x = -3
Explanation:
both angles together add to GHI so you would start with an equation like this.
x + 135 + x + 25 = 154
You then with add the sums together
2x + 160 = 154
-160 -160
minus 160 both sides
2x = -6
/2 /2
divide both sides by 2
x = -3
This is your answer.