The 3 outside angles of a triangle need to equal 360 degrees.
You are given 96 and 137.
96 +137 = 233
The third outside angle needs to equal 360 - 233 = 127
So now you have:
2x - 23 = 127
Add 23 to both sides:
2x = 150
Divide both sides by 2:
x = 150 / 2
X = 75
The angle equals 127 degrees, X = 75
