Respuesta :

lesandisusanya

Answer:

x° = 75°

Step-by-step explanation:

Angles on a straight line add up to 180°.

[tex]2x + 30 = 180 \\ 2x = 180 - 30 \\ 2x = 150 \\ x = \frac{150}{2} \\ x = 75 \\ [/tex]