Answer:
X = 14.6, Angle W = 28.8 degrees
Step-by-step explanation:
We know that all of the angles of a trapezoid add up to 360 degrees.
So 10x + 3x - 5 + 6x + 6x = 360
This simplifies to 25x - 5 = 350
Now we have to add 5 to each side.
25x - 5 + 5 = 360 + 5
25x = 365
Now we have to divide each side by 25.
X = 14.6
Substitute X in 3x - 15 to 14.6
3 (14.6) - 15 = Angle W
43.8 - 15 = Angle W
28.8 degrees = Angle W
