The sum of these two angles is 180°, therefore,
138° + (x + 8)° = 180°.
Simplify the left side of the equation.
146° + x = 180°.
Subtract 146 from both sides.
x = 34°
Answer:
130
Step-by-step explanation:
You have to make this question into an equation. So let the equation be x+8=138. Then you subtract 8 from both sides. Bring down the x and you'll get your answer.
[tex]x + 8 = 138\\ -8 -8\\x = 130[/tex]
