Respuesta:
90 + 5x + 6x + 7x = 360
90 + 18x = 360
18x = 270
x = 15
Respuesta c) 15°
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Verified answer
Respuesta:
90 + 5x + 6x + 7x = 360
90 + 18x = 360
18x = 270
x = 15
Respuesta c) 15°