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in the triangle DEF, angle D measures 3x, angle E measures 6x+12, and angle F measures 5x. what is the value of x

in the triangle DEF angle D measures 3x angle E measures 6x12 and angle F measures 5x what is the value of x class=

Respuesta :

Answer:

x = 12

Step-by-step explanation:

3x + 6x + 12 + 5x = 180

14x + 12 = 180

14x = 168

x = 12