Respuesta:
x = 60°
Explicación paso a paso:
2α + 80° + 40° = 180°
2α + 120° = 180°
2α = 60°
α = 30°
α + x = 90°
30° + x = 90°
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Respuesta:
x = 60°
Explicación paso a paso:
2α + 80° + 40° = 180°
2α + 120° = 180°
2α = 60°
α = 30°
α + x = 90°
30° + x = 90°
x = 60°