Respuesta :

Lieuvan119
The sum of all three interior angle will be 180°, so
(2x-5)°+(4x-1)°+30°=180°
2x-5°+4x-1°+30°=180°
6x-6°+30°=180°
5x+24°=180°
Subtract 24° for both side
5x=156°
Divided 5 for both side
x=31.2°. Hope it help!

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