test due tomorrow pls help

Answer:
8x + 12 + 2x + 28 = 180
Step-by-step explanation:
just add the angles ABC and CBD then equates to 180
8x + 12 + 2x + 28 = 180
10x = 180 - 12 - 28
x = 140/10
x = 14
therefore, the equation to solve x :
8x + 12 + 2x + 28 = 180