marikm06 marikm06
  • 11-10-2020
  • Mathematics
contestada

Anyone know the answer

Anyone know the answer class=

Respuesta :

bwn20
bwn20 bwn20
  • 11-10-2020

Answer:

129

Step-by-step explanation:

angle DCE= 180-(12X+15)

12X+15=20X-9

X=3

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