Respuesta:
x = 15
Explicación paso a paso:
3x + 135°=180°
3x = 180° - 135°
3x = 45°
x = 45° ÷ 3
x = 15°
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Respuesta:
x = 15
Explicación paso a paso:
3x + 135°=180°
3x = 180° - 135°
3x = 45°
x = 45° ÷ 3
x = 15°