Respuesta:
c) 30°
Explicación paso a paso:
x + a + x - a + 40° = 180°
2x = 180° - 40°
2x = 60°
x = 30°
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Respuesta:
c) 30°
Explicación paso a paso:
x + a + x - a + 40° = 180°
2x = 180° - 40°
2x = 60°
x = 30°