So the trapezoid has 2 parallel sides making segments AD and BC transversals
Therefore making angle c and angle b add up to 180
(180-3x) + 3x + 180-9x +9x
180 +12x = 360
180= 12x
x= 15
3ab - 3a - 8 + 4ab + 8
7ab -3a
Answer:
76
Step-by-step explanation: and explain
Explanation is in the file
tinyurl.com/wpazsebu